PullRequest CI Run: use pull_request_target to allow the CI Dashboard to work (#4277)

'_target' allows secrets to pass through, and we're just using the secret that allows uploading to the dashboard and are manually vetting PRs before running this workflow anyway

.github/workflows/pullrequest-ci-run.yml

@@ -2,7 +2,7 @@
 # Results are reported as checkmarks on the commits, as well as onto https://ci.comfy.org/
 name: Pull Request CI Workflow Runs
 on:
-    pull_request:
+    pull_request_target:
         types: [labeled]
 
 jobs: