MAINT: Iterate faster on credit [ci skip] (#12793)

.github/workflows/credit.yml

@@ -5,7 +5,8 @@ on:  # yamllint disable-line rule:truthy
   schedule:
     # TODO: After making sure it works in `main` for a while, switch to monthly
     # - cron: '0 0 1 * *'  # first day of the month at midnight
-    - cron: '0 0 * * *'  # every day at midnight
+    - cron: '*/30 * * * *'  # every half hour
+  workflow_dispatch:
 
 permissions:
   pull-requests: write
@@ -38,5 +39,5 @@ jobs:
           git config --global user.email "114827586+autofix-ci[bot]@users.noreply.github.com"
           git config --global user.name "autofix-ci[bot]"
           git commit -am "MAINT: Update code credit"
-          gh pr create -B main -H credit --title "MAINT: Update code credit" --body "Created by \"${{ github.workflow }}\" GitHub action." --label "no-changelog-entry-needed"
+          gh pr create --title "MAINT: Update code credit" --body "Created by \"${{ github.workflow }}\" GitHub action." --label "no-changelog-entry-needed"
         if: steps.status.outputs.dirty == 'true'