Update actions/checkout action to v5

Author: renovate[bot]

.github/workflows/auto-set-labels.yml

@@ -7,7 +7,7 @@ jobs:
       contents: read
       pull-requests: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Setting labels
         uses: FiligranHQ/[email protected]
         with: