Add source parameter in publish workflow (#9)

Author: neoscie

.github/workflows/dotnet-publish.yml

@@ -41,6 +41,6 @@ jobs:
         run: nuget pack Neolution.CodeAnalysis.TestsRuleset.nuspec
 
       - name: Push all packages to Nuget.org
-        run: dotnet nuget push --skip-duplicate -k $NUGET_AUTH_TOKEN  **/*.nupkg
+        run: dotnet nuget push --skip-duplicate -s $ARTIFACTS_FEED_URL -k $NUGET_AUTH_TOKEN  **/*.nupkg
         env:
           NUGET_AUTH_TOKEN: ${{ secrets.NUGET_API_KEY_NEOLUTION }}