Another fix to setup-dotnet in github-action script.

.github/workflows/windows.yml

@@ -19,12 +19,9 @@ jobs:
     - uses: actions/checkout@v4
       with:
         submodules: true
-    #.net framework 4.8.x for debugger visualizer and 7.0.x for others    
     - uses: actions/setup-dotnet@v3
       with:
-        dotnet-version: |
-            4.8.x 
-            7.0.x
+        dotnet-version: '7.0.x'
     - name: Install dotnet workload 
       run: dotnet workload install maui maccatalyst
     #- name: Check out submodules