Skip duplicates

Author: paulirwin

.github/workflows/dotnet.yml

@@ -42,4 +42,4 @@ jobs:
         if-no-files-found: warn
     - name: Publish to NuGet
       if: github.event_name == 'push' && (github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/heads/release/'))
-      run: dotnet nuget push "./artifacts/*.nupkg" --api-key ${{ secrets.NUGET_API_KEY }} --source https://api.nuget.org/v3/index.json
+      run: dotnet nuget push "./artifacts/*.nupkg" --api-key ${{ secrets.NUGET_API_KEY }} --source https://api.nuget.org/v3/index.json --skip-duplicate