fix: add updated workflow with corrected bot username and event handling

- Add 'opened' trigger to catch PRs when bot immediately applies label
- Fix bot username to github-actions[bot] (verified via API and commit history)
- Restructure condition to handle both 'labeled' and 'opened' events
  * 'labeled': uses github.event.label.name
  * 'opened': uses github.event.pull_request.labels.*.name
  * Prevents 'opened' event from failing due to missing github.event.label
This enables the auto-merge workflow to work with Speakeasy SDK generation PRs.

Author: christineschen

.github/workflows/auto-merge-speakeasy-pr.yaml

@@ -18,11 +18,17 @@ concurrency:
 jobs:
   auto-merge:
     if: |
-      github.event.sender.login == 'app/github-actions' &&
-      github.event.pull_request.user.login == 'app/github-actions' &&
+      github.event.sender.login == 'github-actions[bot]' &&
+      github.event.pull_request.user.login == 'github-actions[bot]' &&
       startsWith(github.event.pull_request.head.ref, 'speakeasy-sdk-regen-') &&
       contains(github.event.pull_request.title, '🐝 Update SDK') &&
-      contains(fromJSON('["patch", "minor", "major"]'), github.event.label.name)
+      (
+        (github.event.action == 'labeled' && contains(fromJSON('["patch", "minor", "major"]'), github.event.label.name)) ||
+        (github.event.action == 'opened' && 
+         (contains(github.event.pull_request.labels.*.name, 'patch') || 
+          contains(github.event.pull_request.labels.*.name, 'minor') || 
+          contains(github.event.pull_request.labels.*.name, 'major')))
+      )
     runs-on: ubuntu-latest
     steps:
       - name: Close superseded Speakeasy PRs