Update C# runtime in tests

Author: jketema

.github/workflows/csharp-qltest.yml

@@ -55,10 +55,10 @@ jobs:
       - name: Extractor unit tests
         run: |
           dotnet tool restore
-          dotnet test -p:RuntimeFrameworkVersion=10.0.0 extractor/Semmle.Util.Tests
-          dotnet test -p:RuntimeFrameworkVersion=10.0.0 extractor/Semmle.Extraction.Tests
-          dotnet test -p:RuntimeFrameworkVersion=10.0.0 autobuilder/Semmle.Autobuild.CSharp.Tests
-          dotnet test -p:RuntimeFrameworkVersion=10.0.0 autobuilder/Semmle.Autobuild.Cpp.Tests
+          dotnet test -p:RuntimeFrameworkVersion=10.0.5 extractor/Semmle.Util.Tests
+          dotnet test -p:RuntimeFrameworkVersion=10.0.5 extractor/Semmle.Extraction.Tests
+          dotnet test -p:RuntimeFrameworkVersion=10.0.5 autobuilder/Semmle.Autobuild.CSharp.Tests
+          dotnet test -p:RuntimeFrameworkVersion=10.0.5 autobuilder/Semmle.Autobuild.Cpp.Tests
         shell: bash
   stubgentest:
     runs-on: ubuntu-latest