CI - Add missing frameworks

Author: henrikfroehling

.github/constants.env

@@ -1,3 +1,5 @@
 DOTNET_VERSION_CURRENT_STABLE: '9.0.x'
 DOTNET_8_VERSION_STABLE: '8.0.x'
+DOTNET_7_VERSION_STABLE: '7.0.x'
+DOTNET_6_VERSION_STABLE: '6.0.x'
 DOTNET_VERSION_PREVIEW: ''

.github/workflows/build.yml

@@ -77,6 +77,8 @@ jobs:
           dotnet-version: |
             ${{ env.DOTNET_VERSION_CURRENT_STABLE }}
             ${{ env.DOTNET_8_VERSION_STABLE }}
+            ${{ env.DOTNET_7_VERSION_STABLE }}
+            ${{ env.DOTNET_6_VERSION_STABLE }}
 
       - name: Restore dependencies
         run: dotnet restore

.github/workflows/documentation.yml

@@ -45,6 +45,8 @@ jobs:
           dotnet-version: |
             ${{ env.DOTNET_VERSION_CURRENT_STABLE }}
             ${{ env.DOTNET_8_VERSION_STABLE }}
+            ${{ env.DOTNET_7_VERSION_STABLE }}
+            ${{ env.DOTNET_6_VERSION_STABLE }}
 
       - name: Setup DocFX
         run: dotnet tool update -g docfx

.github/workflows/sonarcloud.yml

@@ -35,6 +35,8 @@ jobs:
           dotnet-version: |
             ${{ env.DOTNET_VERSION_CURRENT_STABLE }}
             ${{ env.DOTNET_8_VERSION_STABLE }}
+            ${{ env.DOTNET_7_VERSION_STABLE }}
+            ${{ env.DOTNET_6_VERSION_STABLE }}
 
       - name: Install SonarCloud scanner
         if: steps.cache-sonar-scanner.outputs.cache-hit != 'true'