Update build-and-publish.yml

Author: Sewer56

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

@@ -31,7 +31,7 @@ jobs:
     - name: Setup .NET Core SDK
       uses: actions/setup-dotnet@v1.9.0
       with:
-        dotnet-version: '5.0.x'
+        dotnet-version: '6.0.x'
 
     - name: Print Environment Variables
       run: |