Corrected upload-only key name in EWS step

Author: adamlui

.github/workflows/publish-to-cws-ews-on-chromium-bump.yml

@@ -51,5 +51,5 @@ jobs:
           client-id: ${{ secrets.EWS_CLIENT_ID }}
           api-key: ${{ secrets.EWS_CLIENT_SECRET }}
           zip-path: extension.zip
-          upload_only: true
+          upload-only: true
         continue-on-error: true