Update dotnet.yml

Author: trueromanus

.github/workflows/dotnet.yml

@@ -14,7 +14,7 @@ jobs:
     steps:
     - uses: actions/checkout@v6
     - name: Setup .NET
-      uses: actions/setup-dotnet@v6
+      uses: actions/setup-dotnet@v5
       with:
         dotnet-version: 9.0.x
     - name: Restore dependencies