chore(deps): update actions/setup-dotnet action to v4

Author: renovate[bot]

.github/workflows/dotnet.yml

@@ -14,7 +14,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: Setup .NET
-      uses: actions/setup-dotnet@v3
+      uses: actions/setup-dotnet@v4
       with:
         dotnet-version: 7.0.203
     - name: Restore dependencies