Fix labeler (#25)

Author: evgeek

.github/workflows/auto_labeler.yml

@@ -7,7 +7,7 @@ jobs:
     name: "Checking for labels"
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/labeler@main
+      - uses: actions/labeler@4.3.0
         with:
           repo-token: "${{ secrets.GITHUB_TOKEN }}"
           sync-labels: true