Revert "Update .NET SDK version to 10.0.x"

This reverts commit 0f4e263

Author: stidsborg

.github/workflows/dotnet.yml

@@ -17,7 +17,7 @@ jobs:
         submodules: 'true'
     - uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: '10.0.x'
+        dotnet-version: '9.0.x' # SDK Version to use; x will use the latest version of the 3.1 channel
     - name: Start containers
       run: docker compose -f "./docker-compose.yml" up -d --build           
     - name: Build