added old script back and triger event on reopen as well

.github/workflows/auto-pr-merge.yml

@@ -1,18 +1,18 @@
 name: Auto-merge PRs
 on:
   pull_request_target:
-    types: [opened, synchronize]
+    types: [opened, synchronize, reopened]
     paths:
-      - 'Contributors.md' # <- only run if only contributors file changed
-    
+      - "Contributors.md" # <- only run if only contributors file changed
+
 jobs:
   auto-merge:
     runs-on: ubuntu-latest
     permissions:
       contents: write
       pull-requests: write
       issues: write
-      
+
     steps:
       # Check out the repository code
       - name: Checkout code
@@ -31,7 +31,7 @@ jobs:
           FILES_CHANGED=$(echo $PR_FILES | tr '\n' ' ')
 
           echo "files_changed=$FILES_CHANGED" >> $GITHUB_ENV
-          
+
           if [[ "${FILES_CHANGED// /}" == "Contributors.md" ]]; then
 
             echo "only_contributors=true" >> $GITHUB_ENV
@@ -55,7 +55,7 @@ jobs:
             echo "one_line_change=false" >> $GITHUB_ENV
           fi
 
-      # Merge the pull request if it only modifies the Contributors.md file or if it fail to do then drop failure message as post 
+      # Merge the pull request if it only modifies the Contributors.md file or if it fail to do then drop failure message as post
       - name: Merge PR
         id: merge_pr
         if: env.only_contributors == 'true' && env.one_line_change == 'true'
@@ -213,5 +213,5 @@ jobs:
                 body: body
               });
             }
-            
-          github-token: ${{ secrets.GITHUB_TOKEN }}
+
+          github-token: ${{ secrets.GITHUB_TOKEN }}