Bump BouncyCastle.Cryptography from 2.2.1 to 2.3.1

Bumps [BouncyCastle.Cryptography](https://github.com/bcgit/bc-csharp) from 2.2.1 to 2.3.1.
- [Commits](bcgit/bc-csharp@release-2.2.1...release-2.3.1)

---
updated-dependencies:
- dependency-name: BouncyCastle.Cryptography
  dependency-type: direct:production
...

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

ScepClient.csproj

@@ -1,28 +1,28 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <OutputType>Exe</OutputType>
-    <TargetFramework>net6.0</TargetFramework>
-    <RootNamespace>ScepClient</RootNamespace>
-    <AssemblyName>ScepClient</AssemblyName>
-    <AssemblyVersion>1.1.0.0</AssemblyVersion>
-    <FileVersion>1.1.0.0</FileVersion>
-    <Company>glueckkanja-gab AG</Company>
-  </PropertyGroup>
-
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
-    <Optimize>False</Optimize>
-  </PropertyGroup>
-
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
-    <Optimize>True</Optimize>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <PackageReference Include="BouncyCastle.Cryptography" Version="2.2.1" />
-    <PackageReference Include="System.DirectoryServices" Version="5.0.0" />
-    <PackageReference Include="System.Security.Cryptography.Cng" Version="5.0.0" />
-    <PackageReference Include="System.Security.Cryptography.Pkcs" Version="5.0.1" />
-  </ItemGroup>
-
-</Project>
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <RootNamespace>ScepClient</RootNamespace>
+    <AssemblyName>ScepClient</AssemblyName>
+    <AssemblyVersion>1.1.0.0</AssemblyVersion>
+    <FileVersion>1.1.0.0</FileVersion>
+    <Company>glueckkanja-gab AG</Company>
+  </PropertyGroup>
+
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
+    <Optimize>False</Optimize>
+  </PropertyGroup>
+
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
+    <Optimize>True</Optimize>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="BouncyCastle.Cryptography" Version="2.3.1" />
+    <PackageReference Include="System.DirectoryServices" Version="5.0.0" />
+    <PackageReference Include="System.Security.Cryptography.Cng" Version="5.0.0" />
+    <PackageReference Include="System.Security.Cryptography.Pkcs" Version="5.0.1" />
+  </ItemGroup>
+
+</Project>