Merge pull request #2619 from garageScript/2618-workflow-unable-to-read-preview-db-secrets

Change init-preview-db workflow trigger to `pull_request_target`

Author: flacial

.github/workflows/init-preview-db.yml

@@ -1,13 +1,14 @@
 name: init-preview-db
 on:
-  pull_request:
+  pull_request_target:
     types:
       - closed
     paths:
       - 'prisma/**'
 
 jobs:
   ssh-and-update-preview-db:
+    if: github.event.pull_request.merged == true
     runs-on: ubuntu-latest
     steps:
       - uses: appleboy/ssh-action@master