Auto-publish packages when updating default branch

.github/workflows/publish-npm.yml

@@ -1,6 +1,9 @@
 name: Publish npm packages
 
 on:
+  # Auto-publish every change to the default branch
+  push:  
+    branches: [main]
   workflow_dispatch:
     inputs:
       bump:
@@ -33,6 +36,6 @@ jobs:
           git config user.email github-actions@github.com
 
       - name: Publish packages
-        run: npx lerna publish ${{ github.event.inputs.bump }} --yes
+        run: npx lerna publish ${{ github.event.inputs.bump || 'patch' }} --yes
         env:
           NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}