set review-bot to trigger only on review approvals

Moved the review event of review-bot to only be triggered in approvals.

Because we only update the required reviews when someone approves, this will stop the bot from immediately requesting a new review when someone comments or request changes

.github/workflows/review-trigger.yml

@@ -13,7 +13,7 @@ on:
 
 jobs:
   trigger-review-bot:
-    if: github.event.pull_request.draft != true
+    if: github.event.pull_request.draft != true || (github.event.review && github.event.review.state == 'APPROVED')
     runs-on: ubuntu-latest
     name: trigger review bot
     steps: