chore(deps): update actions/setup-dotnet action to v5 (#13)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/ci.yml

@@ -20,7 +20,7 @@ jobs:
         fetch-depth: 0   # REQUIRED for MinVer
 
     - name: Setup .NET (latest stable)
-      uses: actions/setup-dotnet@v4
+      uses: actions/setup-dotnet@v5
       with:
         dotnet-version: 8.0.x