use branches instead of if in the job, add permissions

.github/workflows/pr-title-update.yml

@@ -3,10 +3,14 @@ name: Update PR Title If Target Branch Is A Version Branch
 on:
   pull_request_target:
     types: [opened]
+    branches:
+      - 'release_**'
 
 jobs:
   update-title:
     runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
     steps:
       - name: Update PR title
         env:
@@ -15,11 +19,8 @@ jobs:
           PR_NUMBER=${{ github.event.pull_request.number }}
           TARGET_BRANCH=$(gh pr view $PR_NUMBER --json baseRefName -q .baseRefName)
           PR_TITLE=$(gh pr view $PR_NUMBER --json title -q .title)
-          
-          if [[ "$TARGET_BRANCH" != "dev" ]]; then
-            VERSION=$(echo $TARGET_BRANCH | grep -oP '\d+\.\d+')
-            if [[ -n "$VERSION" && ! "$PR_TITLE" =~ ^\[$VERSION\] ]]; then
-              NEW_TITLE="[$VERSION] $PR_TITLE"
-              gh pr edit $PR_NUMBER --title "$NEW_TITLE"
-            fi
+          VERSION=$(echo $TARGET_BRANCH | grep -oP '\d+\.\d+')
+          if [[ -n "$VERSION" && ! "$PR_TITLE" =~ ^\[$VERSION\] ]]; then
+            NEW_TITLE="[$VERSION] $PR_TITLE"
+            gh pr edit $PR_NUMBER --title "$NEW_TITLE"
           fi