build: add python upgrade workflow

.github/workflows/upgrade-python-requirements.yml

@@ -0,0 +1,35 @@
+name: Upgrade Python Requirements
+
+on:
+  schedule:
+    # Run on the first day of the month.
+    # This is less frequent than the Open edX default (weekly), as this repo
+    # is old and barely used, and we just need to keep it working for another
+    # few releases.
+    - cron: "0 0 1 1 *"  # First day of the month
+  workflow_dispatch:
+    inputs:
+      branch:
+        description: "Target branch against which to create requirements PR"
+        required: true
+        # If copying this template manually, you must provide your default branch name
+        # in quotes, such as 'master'
+        default: "master"
+
+jobs:
+  call-upgrade-python-requirements-workflow:
+    uses: openedx/.github/.github/workflows/upgrade-python-requirements.yml@master
+    with:
+    # If copying manually, also provide your default branch name in quotes here
+      branch: ${{ github.event.inputs.branch || "master" }}
+      # optional parameters below; fill in if you'd like github or email notifications
+      # user_reviewers: ""
+      # team_reviewers: ""
+      # email_address: ""
+      # send_success_notification: false
+      # python_version: ""
+    secrets:
+      requirements_bot_github_token: ${{ secrets.REQUIREMENTS_BOT_GITHUB_TOKEN }}
+      requirements_bot_github_email: ${{ secrets.REQUIREMENTS_BOT_GITHUB_EMAIL }}
+      edx_smtp_username: ${{ secrets.EDX_SMTP_USERNAME }}
+      edx_smtp_password: ${{ secrets.EDX_SMTP_PASSWORD }}