📅 Add scheduled maintenance workflow of Airflow Python Base Image (#6584

)

* 📅 Add scheduled maintenance of Airflow Python Base Image

* 📝 typo

* 🔧 Rename file

.github/workflows/schedule-issue-airflow-python-base.yml

@@ -0,0 +1,60 @@
+---
+name: 📥 Maintenance - Create Airflow Python Base Issue
+
+on:
+  schedule:
+    - cron: "0 8 1 * *" # UTC time: “At 08:00 on first day-of-month”
+
+permissions: {}
+
+jobs:
+  create-maintenance-issue:
+    name: Create Maintenance Issue
+    runs-on: ubuntu-latest
+    permissions:
+      issues: write
+    steps:
+      - name: Create Maintenance Issue
+        id: create_maintenance_issue
+        run: |
+          if [[ "${CLOSE_PREVIOUS}" == true ]]; then
+            previous_issue_number=$(gh issue list \
+              --label "$LABELS" \
+              --json number \
+              --jq '.[0].number')
+            if [[ -n $previous_issue_number ]]; then
+              gh issue close "$previous_issue_number"
+              gh issue unpin "$previous_issue_number"
+            fi
+          fi
+          new_issue_url=$(gh issue create \
+            --title "$TITLE" \
+            --assignee "$ASSIGNEES" \
+            --label "$LABELS" \
+            --body "$BODY")
+          if [[ $PINNED == true ]]; then
+            gh issue pin "$new_issue_url"
+          fi
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GH_REPO: ${{ github.repository }}
+          TITLE: 📥 Maintenance - Airflow Python Base Image
+          ASSIGNEES:
+          LABELS: maintenance
+          BODY: |
+            > [!NOTE]
+            > This issue is created by a scheduled workflow.
+
+            ### User Story
+
+            As an… engineer on the Analytical Platform
+            I need/want/expect to… keep the Airflow Python Base image up to date
+            So that… security / best practice etc
+
+            ### Definition of Done
+            - [ ] Merge any open dependabot Pull Requests in the Ingestion repositories (noted below).
+            - [ ] In the [repository](https://github.com/ministryofjustice/analytical-platform-airflow-python-base), confirm that the [software](https://github.com/ministryofjustice/analytical-platform-airflow-python-base?tab=readme-ov-file#managing-software-versions) and [tests](https://github.com/ministryofjustice/analytical-platform-airflow-python-base/blob/main/test/container-structure-test.yml) are up-to-date.
+            - [ ] Create a new [release](https://github.com/ministryofjustice/analytical-platform-airflow-python-base/releases).
+
+          PINNED: false
+          CLOSE_PREVIOUS: false