Add workflow for keeping pre-commit hooks updated

.github/workflows/pre-commit_autoupdate.yml

@@ -0,0 +1,19 @@
+jobs:
+  auto-update:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2
+      - uses: browniebroke/pre-commit-autoupdate-action@main
+      - uses: peter-evans/create-pull-request@v3
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          branch: update/pre-commit-hooks
+          title: Update pre-commit hooks
+          commit-message: "Update pre-commit hooks"
+          body: Update versions of pre-commit hooks to the latest version.
+name: 'Update pre-commit hooks'
+on:
+  schedule:
+    - cron: '0 15 * * 1'
+  workflow_dispatch: