ci: trusted auto-approve and merge

Author: milesburton

.github/workflows/trusted-automerge.yml

@@ -10,7 +10,10 @@ permissions:
 
 jobs:
   trusted-automerge:
-    if: github.event.pull_request.user.login == 'milesburton' || github.event.pull_request.user.login == 'dependabot[bot]'
+    if: >-
+      github.event.pull_request.user.login == 'milesburton' ||
+      github.event.pull_request.user.login == 'dependabot[bot]' ||
+      github.event.pull_request.user.login == 'app/dependabot'
     runs-on: ubuntu-latest
     steps:
       - name: Auto approve trusted PR