mesh-2092: add make update to workflow

Author: james-bradley-nhs

.github/workflows/dependabot-auto-merge.yaml

@@ -10,8 +10,43 @@ on:
       - labeled
 
 jobs:
+  export-requirements:
+    # if: github.actor == 'dependabot[bot]'
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ github.head_ref }}
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+
+      - name: Install Poetry
+        run: |
+          curl -sSL https://install.python-poetry.org | python3 -
+          echo "$HOME/.local/bin" >> $GITHUB_PATH
+
+      - name: Export requirements
+        run: make export-requirements
+
+      - name: Commit and push changes
+        run: |
+          git config --global user.name 'github-actions[bot]'
+          git config --global user.email 'github-actions[bot]@users.noreply.github.com'
+          git add requirements.txt
+          git diff --staged --quiet || git commit -m "mesh-2092: update requirements.txt"
+          git push
+
   enable-automerge:
     # Only run on Dependabot PRs
+    needs: export-requirements
     if: github.actor == 'dependabot[bot]'
     runs-on: ubuntu-latest
     permissions: