fixup! copilot: add setup steps

Author: xperiandri

.github/workflows/copilot-setup-steps.yml

@@ -29,7 +29,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Setup necessary dotnet SDKs
-        uses: actions/setup-dotnet@v3
+        uses: actions/setup-dotnet@v4
         with:
           global-json-file: global.json
           dotnet-version: |