Update dotnet.yml

Author: yawaflua

.github/workflows/dotnet.yml

@@ -14,10 +14,14 @@ jobs:
       - name: Setup .NET
         uses: actions/setup-dotnet@v4
         with:
-          dotnet-version: [6.0.x, 7.0.x, 8.0.x, 9.0.x]
+          dotnet-version: |
+            6.0.x
+            7.0.x
+            8.0.x
+            9.0.x
       - name: Restore dependencies
         run: dotnet restore
       - name: Build
         run: dotnet build --no-restore /p:TreatWarningsAsErrors=false
       - name: Test
-        run: dotnet test --no-build --verbosity normal
+        run: dotnet test --no-build --verbosity normal