check if label exists before deletion

.github/workflows/labeler.yaml

@@ -15,15 +15,15 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
-          gh label delete "bug" --yes
-          gh label delete "documentation" --yes
-          gh label delete "duplicate" --yes
-          gh label delete "enhancement" --yes
-          gh label delete "good first issue" --yes
-          gh label delete "help wanted" --yes
-          gh label delete "invalid" --yes
-          gh label delete "question" --yes
-          gh label delete "wontfix" --yes
+          if gh label list | grep -q "bug"; then gh label delete "bug" --yes fi
+          if gh label list | grep -q "documentation"; then gh label delete "documentation" --yes fi
+          if gh label list | grep -q "duplicate"; then gh label delete "duplicate" --yes fi
+          if gh label list | grep -q "enhancement"; then gh label delete "enhancement" --yes fi
+          if gh label list | grep -q "good first issue"; then gh label delete "good first issue" --yes fi
+          if gh label list | grep -q "help wanted"; then gh label delete "help wanted" --yes fi
+          if gh label list | grep -q "invalid"; then gh label delete "invalid" --yes fi
+          if gh label list | grep -q "question"; then gh label delete "question" --yes fi
+          if gh label list | grep -q "wontfix"; then gh label delete "wontfix" --yes fi
 
           gh label create "🚨 action" --description "Changes in GitHub workflows or actions" --color "A75AD5" --force
           gh label create "🤖 bot" --description "Automatically generated pull request" --color "0075CA" --force