Update ci.yml

Author: tamararivera

.github/workflows/ci.yml

@@ -35,9 +35,7 @@ jobs:
       - name: Setup .NET SDK
         uses: actions/setup-dotnet@v4.0.0
         with:
-          dotnet-version: |
-            8.0.x
-            6.0.x
+          dotnet-version: 8.0.x
       - name: Setup Azure Functions Core Tools - Windows
         if: runner.os == 'Windows'
         run: |