Bump Microsoft.SourceLink.GitHub from 1.0.0 to 1.1.1

Bumps [Microsoft.SourceLink.GitHub](https://github.com/dotnet/sourcelink) from 1.0.0 to 1.1.1.
- [Release notes](https://github.com/dotnet/sourcelink/releases)
- [Commits](dotnet/sourcelink@1.0.0...1.1.1)

---
updated-dependencies:
- dependency-name: Microsoft.SourceLink.GitHub
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Source/Directory.Build.targets

@@ -10,7 +10,7 @@
   <Import Project="..\Tools\MSBuild.DevLocal.targets" Condition="'$(IsCloudBuild)' != 'true'"/>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0" PrivateAssets="All"/>
+    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.1.1" PrivateAssets="All"/>
   </ItemGroup>
 
   <ItemGroup Condition="'$(IsCloudBuild)' == 'true' and '$(DisableNerdBank)'!='true'">