Merge pull request #2688 from firebase/jh-provenance

Adding --provenance flag

Author: joehan

.github/workflows/scripts/npm_publish.sh

@@ -63,4 +63,4 @@ if npm_package_version_exists "$NPM_PACKAGE_NAME" "$NPM_PACKAGE_VERSION"; then
 fi
 
 echo "Attempting to publish $NPM_PACKAGE_NAME version $NPM_PACKAGE_VERSION..."
-npm publish 
+npm publish --provenance