Create automated PR with token (#1106)

* Create automated PR with token

Generates a token from a GitHub app that can be used in automation tasks that create pull requests.

* Update inventory.yml

* Update inventory.yml

* Update Inventory for heroku/nodejs yarn (#1109)

- Added Yarn version 3.6.0.

Co-authored-by: colincasey <[email protected]>

* Revert "Update Inventory for heroku/nodejs yarn (#1109)"

This reverts commit 518b86a52140ea7efabf871690053ab8646c7973.

---------

Co-authored-by: heroku-linguist[bot] <136119646+heroku-linguist[bot]@users.noreply.github.com>
Co-authored-by: colincasey <[email protected]>

.github/workflows/inventory.yml

@@ -24,14 +24,27 @@ jobs:
         run: "generate_inventory node > inventory/node.toml"
       - name: Update Changelog
         run: echo "${{ steps.set-diff-msg.outputs.msg }}" | xargs -r -I '{}' perl -i -p -e 's/## main\s+/## main\n\n{}/' CHANGELOG.md
+      - uses: heroku/use-app-token-action@main
+        id: generate-token
+        with:
+          app_id: ${{ vars.LINGUIST_GH_APP_ID }}
+          private_key: ${{ secrets.LINGUIST_GH_PRIVATE_KEY }}
       - name: Create Pull Request
+        id: pr
         uses: peter-evans/[email protected]
         with:
+          token: ${{ steps.generate-token.outputs.app_token }}
           title: "Update Node.js Engine Inventory"
           commit-message: "Update Inventory for heroku/nodejs engine\n\n${{ steps.set-diff-msg.outputs.msg }}"
           branch: update-nodejs-inventory
           labels: "automation"
           body: "Automated pull-request to update heroku/nodejs engine inventory:\n\n${{ steps.set-diff-msg.outputs.msg }}"
+      - name: Configure PR
+        if: steps.pr.outputs.pull-request-operation == 'created'
+        run: gh pr merge --squash --auto "${{ steps.pr.outputs.pull-request-number }}"
+        env:
+          GH_TOKEN: ${{ steps.generate-token.outputs.app_token }}
+
   update-yarn-inventory:
     name: Update Node.js Yarn Inventory
     runs-on: pub-hk-ubuntu-22.04-small
@@ -52,11 +65,23 @@ jobs:
         run: "generate_inventory yarn > inventory/yarn.toml"
       - name: Update Changelog
         run: echo "${{ steps.set-diff-msg.outputs.msg }}" | xargs -r -I '{}' perl -i -p -e 's/## main\s+/## main\n\n{}/' CHANGELOG.md
+      - uses: heroku/use-app-token-action@main
+        id: generate-token
+        with:
+          app_id: ${{ vars.LINGUIST_GH_APP_ID }}
+          private_key: ${{ secrets.LINGUIST_GH_PRIVATE_KEY }}
       - name: Create Pull Request
+        id: pr
         uses: peter-evans/[email protected]
         with:
+          token: ${{ steps.generate-token.outputs.app_token }}
           title: "Update Node.js Yarn Inventory"
           commit-message: "Update Inventory for heroku/nodejs yarn\n\n${{ steps.set-diff-msg.outputs.msg }}"
           branch: update-yarn-inventory
           labels: "automation"
           body: "Automated pull-request to update heroku/nodejs yarn inventory:\n\n${{ steps.set-diff-msg.outputs.msg }}"
+      - name: Configure PR
+        if: steps.pr.outputs.pull-request-operation == 'created'
+        run: gh pr merge --squash --auto "${{ steps.pr.outputs.pull-request-number }}"
+        env:
+          GH_TOKEN: ${{ steps.generate-token.outputs.app_token }}