Update to .NET 6 and C# 10 (#2211)

Co-authored-by: Pieter-Jan Briers <pieterjan.briers+git@gmail.com>

.github/workflows/build-test.yml

@@ -22,7 +22,7 @@ jobs:
     - name: Setup .NET Core
       uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: 5.0.100
+        dotnet-version: 6.0.100
     - name: Install dependencies
       run: dotnet restore
     - name: Build

.github/workflows/codeql-analysis.yml

@@ -42,7 +42,7 @@ jobs:
     - name: Setup .NET Core
       uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: 5.0.100
+        dotnet-version: 6.0.100
 
     - name: Build
       run: dotnet build

.github/workflows/publish-client.yml

@@ -23,7 +23,7 @@ jobs:
     - name: Setup .NET Core
       uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: 5.0.100
+        dotnet-version: 6.0.100
 
     - name: Package client
       run: Tools/package_client_build.py -p windows mac linux

.github/workflows/test-content.yml

@@ -21,7 +21,7 @@ jobs:
     - name: Setup .NET Core
       uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: 5.0.100
+        dotnet-version: 6.0.100
     - name: Disable submodule autoupdate
       run: touch BuildChecker/DISABLE_SUBMODULE_AUTOUPDATE
 
@@ -38,4 +38,4 @@ jobs:
     - name: Content.Tests
       run: dotnet test --no-build Content.Tests/Content.Tests.csproj -v n
     - name: Content.IntegrationTests
-      run: COMPlus_gcServer=1 dotnet test --no-build Content.IntegrationTests/Content.IntegrationTests.csproj -v n
+      run: COMPlus_gcServer=1 dotnet test --no-build Content.IntegrationTests/Content.IntegrationTests.csproj -v n