[Internal] Fix workflow permissions

Author: hectorcast-db

.github/workflows/external-message.yml

@@ -11,7 +11,15 @@ on:
     branches:
       - main
 
-
+  pull_request:
+    types: [opened, reopened, synchronize]
+    
+permissions:
+  contents: read
+  #Required for commenting on PRs
+  pull-requests: write
+  issues: write
+  
 jobs:
   comment-on-pr:
     runs-on: ubuntu-latest
@@ -23,7 +31,7 @@ jobs:
       - name: Check user and potential secret access
         id: check-secrets-access
         env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
           USER_LOGIN="${{ github.event.pull_request.user.login }}"
           REPO_OWNER="${{ github.repository_owner }}"