Update .NET setup in build workflow to support multiple versions

Author: SchlenkR

.github/workflows/build-and-publish-docs.yml

@@ -16,10 +16,12 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Setup .NET 8
+      - name: Setup .NET
         uses: actions/setup-dotnet@v4
         with:
-          dotnet-version: 8.x
+          dotnet-version: |
+            6.x
+            10.x
 
       - name: Build solution
         run: dotnet build -c Release