ci: add skip-duplicate for publish nuget so that if version wasn't change we don't publish and don't fail the pipeline (#73)

Author: Jymapas

.github/workflows/publish-to-nuget.yml

@@ -34,6 +34,6 @@ jobs:
       run: dotnet pack --configuration Release --no-build --output ./nupkg
 
     - name: Publish NuGet Package
-      run: dotnet nuget push ./nupkg/*.nupkg --api-key ${{ secrets.NUGET_API_KEY }} --source https://api.nuget.org/v3/index.json
+      run: dotnet nuget push ./nupkg/*.nupkg --api-key ${{ secrets.NUGET_API_KEY }} --source https://api.nuget.org/v3/index.json --skip-duplicate
       env:
         NUGET_API_KEY: ${{ secrets.NUGET_API_KEY }}