Update Windows build to use .NET 8

.github/workflows/windows.yml

@@ -18,20 +18,21 @@ jobs:
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
     - uses: actions/checkout@v4.1.5
-    
+
     - name: Setup .NET
       uses: actions/setup-dotnet@v4.0.0
       with:
-        dotnet-version: 6.0.x
+        # DOTNET_VERSION: Update YAML build to use current .NET version.
+        dotnet-version: 8.0.x
 
     - name: Build everything
       run: |
         & .\eng\build.ps1 -build $true
-      
+
     - name: Run unit tests
       run: |
         & .\eng\build.ps1 -build $false -test $true
-      
+
     - name: Test artifact publishing
       run: |
         & .\eng\build.ps1 -build $false -publish $true