Trigger publish workflow on PRs that modify the publish workflow

.github/workflows/publish.yml

@@ -17,6 +17,9 @@ on:
     types:
       - published
       - edited
+  pull_request:
+    paths:
+      - .github/workflows/publish.yml
 
 # We set `concurrency` to prevent having this workflow being run on code that is not up-to-date on a PR (a user make multiple push in a quick manner).
 # But on the main branch, we don't want that behavior.
@@ -27,7 +30,7 @@ concurrency:
 
 
 env:
-  RELEASE_TAG: ${{ github.event_name == 'release' && github.ref_name || inputs.release_tag }}
+  RELEASE_TAG: ${{ (github.event_name == 'release' && github.ref_name) || (github.event_name == 'pull_request' && 'nightly') || inputs.release_tag }}
 
 jobs:
   publish: