Adjust dotnet versions

Author: vbreuss

.github/workflows/build.yml

@@ -20,7 +20,10 @@ jobs:
         uses: actions/setup-dotnet@v4
         with:
           dotnet-version: |
+            6.0.x
+            7.0.x
             8.0.x
+            9.0.x
       - name: Run unit tests (windows)
         if: matrix.os == 'windows-latest'
         run: ./build.ps1 CodeCoverage
@@ -51,7 +54,10 @@ jobs:
         uses: actions/setup-dotnet@v4
         with:
           dotnet-version: |
+            6.0.x
+            7.0.x
             8.0.x
+            9.0.x
       - name: Run sonarcloud analysis
         run: ./build.sh CodeAnalysis
 
@@ -88,7 +94,10 @@ jobs:
         uses: actions/setup-dotnet@v4
         with:
           dotnet-version: |
+            6.0.x
+            7.0.x
             8.0.x
+            9.0.x
       - name: Pack nuget packages
         run: ./build.sh Pack
       - name: Upload packages

.github/workflows/ci.yml

@@ -20,7 +20,10 @@ jobs:
         uses: actions/setup-dotnet@v4
         with:
           dotnet-version: |
+            6.0.x
+            7.0.x
             8.0.x
+            9.0.x
       - name: Run unit tests (windows)
         if: matrix.os == 'windows-latest'
         run: ./build.ps1 CodeCoverage
@@ -52,7 +55,10 @@ jobs:
         uses: actions/setup-dotnet@v4
         with:
           dotnet-version: |
+            6.0.x
+            7.0.x
             8.0.x
+            9.0.x
       - name: Run sonarcloud analysis
         run: ./build.sh CodeAnalysis