[main] Update dependencies from dotnet/roslyn (#94611)

* Update dependencies from https://github.com/dotnet/roslyn build 20231110.1

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23560.1

* Update dependencies from https://github.com/dotnet/roslyn build 20231110.2

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23560.2

* Update dependencies from https://github.com/dotnet/roslyn build 20231110.4

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23560.4

* Update dependencies from https://github.com/dotnet/roslyn build 20231110.5

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23560.5

* Update dependencies from https://github.com/dotnet/roslyn build 20231110.6

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23560.6

* Update dependencies from https://github.com/dotnet/roslyn build 20231110.7

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23560.7

* Update dependencies from https://github.com/dotnet/roslyn build 20231111.1

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23561.1

* Update dependencies from https://github.com/dotnet/roslyn build 20231111.2

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23561.2

* Update dependencies from https://github.com/dotnet/roslyn build 20231112.1

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23562.1

* Update dependencies from https://github.com/dotnet/roslyn build 20231112.2

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23562.2

* Update dependencies from https://github.com/dotnet/roslyn build 20231113.1

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23563.1

* Update dependencies from https://github.com/dotnet/roslyn build 20231113.2

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23563.2

* Update dependencies from https://github.com/dotnet/roslyn build 20231113.3

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23563.3

* Update dependencies from https://github.com/dotnet/roslyn build 20231113.4

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23563.4

* Update dependencies from https://github.com/dotnet/roslyn build 20231113.5

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23563.5

* Update dependencies from https://github.com/dotnet/roslyn build 20231113.6

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23563.6

* Update dependencies from https://github.com/dotnet/roslyn build 20231113.7

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23563.7

* Update dependencies from https://github.com/dotnet/roslyn build 20231114.1

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23564.1

* Update dependencies from https://github.com/dotnet/roslyn build 20231114.2

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23564.2

* Update dependencies from https://github.com/dotnet/roslyn build 20231114.3

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23564.3

* Update dependencies from https://github.com/dotnet/roslyn build 20231114.3

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23564.3

* Update dependencies from https://github.com/dotnet/roslyn build 20231114.4

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23564.4

* Update dependencies from https://github.com/dotnet/roslyn build 20231114.5

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23564.5

* Update dependencies from https://github.com/dotnet/roslyn build 20231114.7

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23564.7

* Update dependencies from https://github.com/dotnet/roslyn build 20231114.10

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23564.10

* Update dependencies from https://github.com/dotnet/roslyn build 20231114.11

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23564.11

* Update dependencies from https://github.com/dotnet/roslyn build 20231115.1

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23565.1

* Update dependencies from https://github.com/dotnet/roslyn build 20231115.2

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23565.2

* Update dependencies from https://github.com/dotnet/roslyn build 20231115.5

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23565.5

* Update dependencies from https://github.com/dotnet/roslyn build 20231115.3

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23565.3

* Update dependencies from https://github.com/dotnet/roslyn build 20231115.6

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23565.6

* Update dependencies from https://github.com/dotnet/roslyn build 20231115.7

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23565.7

* Update dependencies from https://github.com/dotnet/roslyn build 20231115.8

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23565.8

* Update dependencies from https://github.com/dotnet/roslyn build 20231115.9

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23565.9

* Update dependencies from https://github.com/dotnet/roslyn build 20231115.10

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23565.10

* Update dependencies from https://github.com/dotnet/roslyn build 20231116.1

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23566.1

* Update dependencies from https://github.com/dotnet/roslyn build 20231116.3

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23566.3

* Update dependencies from https://github.com/dotnet/roslyn build 20231116.4

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23566.4

* Update dependencies from https://github.com/dotnet/roslyn build 20231116.6

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23566.6

* Update dependencies from https://github.com/dotnet/roslyn build 20231116.7

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23566.7

* Update dependencies from https://github.com/dotnet/roslyn build 20231116.5

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23566.5

* Update dependencies from https://github.com/dotnet/roslyn build 20231116.9

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23566.9

* Update dependencies from https://github.com/dotnet/roslyn build 20231116.10

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23566.10

* Update dependencies from https://github.com/dotnet/roslyn build 20231116.11

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23566.11

* Update dependencies from https://github.com/dotnet/roslyn build 20231116.12

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23566.12

* Update dependencies from https://github.com/dotnet/roslyn build 20231116.13

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23566.13

* Update dependencies from https://github.com/dotnet/roslyn build 20231116.14

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23566.14

* Update dependencies from https://github.com/dotnet/roslyn build 20231116.15

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23566.15

* Update dependencies from https://github.com/dotnet/roslyn build 20231117.1

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23567.1

* Update dependencies from https://github.com/dotnet/roslyn build 20231117.2

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23567.2

* Update dependencies from https://github.com/dotnet/roslyn build 20231120.1

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23570.1

* Update dependencies from https://github.com/dotnet/roslyn build 20231120.5

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23570.5

* Update dependencies from https://github.com/dotnet/roslyn build 20231120.6

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23570.6

* Update dependencies from https://github.com/dotnet/roslyn build 20231120.7

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23570.7

* Update dependencies from https://github.com/dotnet/roslyn build 20231120.8

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23570.8

* Update dependencies from https://github.com/dotnet/roslyn build 20231120.9

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23570.9

* Update dependencies from https://github.com/dotnet/roslyn build 20231120.10

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23570.10

* Update dependencies from https://github.com/dotnet/roslyn build 20231120.12

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23570.12

* Update dependencies from https://github.com/dotnet/roslyn build 20231120.13

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23570.13

* Update dependencies from https://github.com/dotnet/roslyn build 20231121.1

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23571.1

* Update dependencies from https://github.com/dotnet/roslyn build 20231121.2

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23571.2

* Update dependencies from https://github.com/dotnet/roslyn build 20231121.3

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23571.3

* Update dependencies from https://github.com/dotnet/roslyn build 20231121.4

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23571.4

* Update dependencies from https://github.com/dotnet/roslyn build 20231121.5

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23571.5

* Update dependencies from https://github.com/dotnet/roslyn build 20231121.7

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23571.7

* Update dependencies from https://github.com/dotnet/roslyn build 20231121.6

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23571.6

* Update dependencies from https://github.com/dotnet/roslyn build 20231122.2

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23572.2

* Update dependencies from https://github.com/dotnet/roslyn build 20231122.3

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23572.3

* Update dependencies from https://github.com/dotnet/roslyn build 20231123.1

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23573.1

* Update dependencies from https://github.com/dotnet/roslyn build 20231123.2

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23573.2

* Update dependencies from https://github.com/dotnet/roslyn build 20231124.1

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23574.1

* Suppress nullability warning

* Update dependencies from https://github.com/dotnet/roslyn build 20231124.2

Microsoft.CodeAnalysis , Microsoft.CodeAnalysis.CSharp , Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-2.23559.5 -> To Version 4.9.0-2.23574.2

---------

Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>
Co-authored-by: Buyaa Namnan <bunamnan@microsoft.com>

eng/Version.Details.xml

@@ -361,18 +361,18 @@
       <Uri>https://github.com/dotnet/runtime-assets</Uri>
       <Sha>56535aa97ce3932a043255016631f1dfd5f0f661</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Net.Compilers.Toolset" Version="4.9.0-2.23559.5">
+    <Dependency Name="Microsoft.Net.Compilers.Toolset" Version="4.9.0-2.23574.2">
       <Uri>https://github.com/dotnet/roslyn</Uri>
-      <Sha>65fc4bd08b4bc15f6f00b529f47ffaeead03e434</Sha>
+      <Sha>8c990c90f602f4796ac042a0d65f3217f6533adf</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.CodeAnalysis" Version="4.9.0-2.23559.5">
+    <Dependency Name="Microsoft.CodeAnalysis" Version="4.9.0-2.23574.2">
       <Uri>https://github.com/dotnet/roslyn</Uri>
-      <Sha>65fc4bd08b4bc15f6f00b529f47ffaeead03e434</Sha>
+      <Sha>8c990c90f602f4796ac042a0d65f3217f6533adf</Sha>
       <SourceBuild RepoName="roslyn" ManagedOnly="true" />
     </Dependency>
-    <Dependency Name="Microsoft.CodeAnalysis.CSharp" Version="4.9.0-2.23559.5">
+    <Dependency Name="Microsoft.CodeAnalysis.CSharp" Version="4.9.0-2.23574.2">
       <Uri>https://github.com/dotnet/roslyn</Uri>
-      <Sha>65fc4bd08b4bc15f6f00b529f47ffaeead03e434</Sha>
+      <Sha>8c990c90f602f4796ac042a0d65f3217f6533adf</Sha>
     </Dependency>
     <Dependency Name="Microsoft.CodeAnalysis.Analyzers" Version="3.11.0-beta1.23523.1">
       <Uri>https://github.com/dotnet/roslyn-analyzers</Uri>

eng/Versions.props

@@ -39,9 +39,9 @@
       Any tools that contribute to the design-time experience should use the MicrosoftCodeAnalysisVersion_LatestVS property above to ensure
       they do not break the local dev experience.
     -->
-    <MicrosoftCodeAnalysisCSharpVersion>4.9.0-2.23559.5</MicrosoftCodeAnalysisCSharpVersion>
-    <MicrosoftCodeAnalysisVersion>4.9.0-2.23559.5</MicrosoftCodeAnalysisVersion>
-    <MicrosoftNetCompilersToolsetVersion>4.9.0-2.23559.5</MicrosoftNetCompilersToolsetVersion>
+    <MicrosoftCodeAnalysisCSharpVersion>4.9.0-2.23574.2</MicrosoftCodeAnalysisCSharpVersion>
+    <MicrosoftCodeAnalysisVersion>4.9.0-2.23574.2</MicrosoftCodeAnalysisVersion>
+    <MicrosoftNetCompilersToolsetVersion>4.9.0-2.23574.2</MicrosoftNetCompilersToolsetVersion>
   </PropertyGroup>
   <!--
     For source generator support we need to target multiple versions of Roslyn in order to be able to run on older versions of Roslyn.

src/libraries/System.Private.Xml/src/System/Xml/Schema/SchemaCollectionCompiler.cs

@@ -2073,7 +2073,7 @@ private void CompileAttribute(XmlSchemaAttribute xa)
                     else
                     {
                         decl.Presence = SchemaDeclBase.Use.Fixed;
-                        decl.DefaultValueRaw = decl.DefaultValueExpanded = xa.FixedValue;
+                        decl.DefaultValueRaw = decl.DefaultValueExpanded = xa.FixedValue!;
                     }
                     if (decl.Datatype != null)
                     {

src/libraries/System.Private.Xml/src/System/Xml/Schema/SchemaSetCompiler.cs

@@ -2537,7 +2537,7 @@ private void SetDefaultFixed(XmlSchemaAttribute xa, SchemaAttDef decl)
                         decl.Presence = SchemaDeclBase.Use.Fixed;
                     }
 
-                    decl.DefaultValueRaw = decl.DefaultValueExpanded = xa.FixedValue;
+                    decl.DefaultValueRaw = decl.DefaultValueExpanded = xa.FixedValue!;
                 }
 
                 if (decl.Datatype != null)