need to checkout since we use internal labeler now (#51213)

.github/workflows/triage-issues.yml

@@ -20,6 +20,9 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+      - name: Check out repo
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
+
       - name: Label new issues with 'triage'
         uses: ./.github/actions/labeler
         with: