Update ci-build.yml

Author: dei79

.github/workflows/ci-build.yml

@@ -10,7 +10,7 @@ jobs:
     - name: Setup .NET Core
       uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: 6.0.x        
+        dotnet-version: 7.0.x        
     - name: Restore
       working-directory: dotNet
       run: dotnet restore TaskLogging.sln