Update actions/setup-dotnet action to v5

Author: renovate[bot]

.github/workflows/main.yml

@@ -39,7 +39,7 @@ jobs:
     steps:
     - uses: actions/checkout@v6
     - name: Set up .NET SDK
-      uses: actions/setup-dotnet@v4
+      uses: actions/setup-dotnet@v5
       with:
         dotnet-version: 8.0.x
     - name: NuGet cache