.github: periodic labeler

Author: paulfantom

.github/workflows/labeler.yml

@@ -1,18 +1,13 @@
 ---
-# This workflow will triage pull requests and apply a label based on the
-# paths that are modified in the pull request.
-#
-# To use this workflow, you will need to set up a .github/labeler.yml
-# file with configuration.  For more information, see:
-# https://github.com/actions/labeler/blob/master/README.md
-
-name: Labeler
-on: [pull_request]
-
+name: Pull request labeler
+on:
+  schedule:
+    - cron: '*/15 * * * *'
 jobs:
-  label:
+  labeler:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/labeler@v2
-        with:
-          repo-token: "${{ secrets.GITHUB_TOKEN }}"
+      - uses: paulfantom/periodic-labeler@master
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GITHUB_REPOSITORY: ${{ github.repository }}