Exclude symbols from preview push

Author: wcoder

.github/workflows/release-preview.yml

@@ -43,6 +43,7 @@ jobs:
           dotnet nuget push ./nupkg/*.nupkg \
             --source ${FEED_URL} \
             --api-key ${FEED_KEY} \
+            --no-symbols \
             --skip-duplicate
         env:
           FEED_URL: https://nuget.pkg.github.com/wcoder/index.json \