Workflow to run pre-commit autoupdate

.github/workflows/pre-commit-autoupdate.yml

@@ -0,0 +1,35 @@
+# Run pre-commit autoupdate every day at midnight
+# and create a pull request if any changes
+
+
+name: Pre-commit auto-update
+
+on:
+  schedule:
+  - cron: "0 0 * * *"
+  workflow_dispatch: # to trigger manually
+
+jobs:
+  auto-update:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-python@v2.1.1
+      with:
+        python-version: 3.8
+
+    - name: Install pre-commit
+      run: pip install pre-commit
+    - name: Run pre-commit autoupdate
+      run: pre-commit autoupdate
+      working-directory: {{cookiecutter.project_slug}}
+
+    - name: Create Pull Request
+      uses: peter-evans/create-pull-request@v2
+      with:
+        token: ${{ secrets.GITHUB_TOKEN }}
+        branch: update/pre-commit-autoupdate
+        title: Auto-update pre-commit hooks
+        commit-message: Auto-update pre-commit hooks
+        body: Update versions of tools in pre-commit configs to latest version
+        labels: update