Fix: make update contribs into a monthy cron with manual dispatch available!

Fix: setup metadata update as cron

Author: lwasser

.github/workflows/update-contribs.yml

@@ -1,10 +1,10 @@
 name: Update Contributors
 
 on:
-  pull_request:
-  push:
-    branches:
-      - mai
+  workflow-dispatch:
+  schedule:
+    # Runs on the first of each month (see https://crontab.guru)
+    - cron: "* * 1 * *"
 jobs:
   run-meta:
     runs-on: ubuntu-latest
@@ -19,17 +19,13 @@ jobs:
         run: |
           # install pip=>20.1 to use "pip cache dir"
           python -m pip install --upgrade pip wheel
-          echo "$PWD"
-          git branch
       - name: Install pyosmeta and run update contribs
         env:
-          GITHUB_TOKEN: ${{ github.token }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
           pip install pyosmeta@git+https://github.com/pyopensci/update-web-metadata
           echo "$PWD"
-          # Skip error for when this pr actually works
-          # python -bb -W error scripts/parse-contributors.py
-          python scripts/parse-contributors.py
+          python -b -W default scripts/parse-contributors.py
       - name: Create Pull Request
         uses: peter-evans/create-pull-request@v5
         with:
@@ -41,6 +37,6 @@ jobs:
           delete-branch: true
           title: Update new contributors
         env:
-          # Token needed to provide permissions to bot to push to branch
-          # https://github.com/peter-evans/create-pull-request/issues/48#issuecomment-536204092
+          # Custom token needed to trigger PR checks, as GITHUB_TOKEN won't
+          # https://github.com/peter-evans/create-pull-request/blob/main/docs/concepts-guidelines.md#triggering-further-workflow-runs
           GITHUB_TOKEN: ${{ secrets.PYOS_PR_TOKEN }}