Fix Community Review Labeler trigger

It should trigger on pull_request_review for review events.

PiperOrigin-RevId: 879072537
Change-Id: I19ad7fc982f2e9259dd204a37da457924ca9690e

.github/workflows/community-review-labeler.yml

diff --git a/.github/workflows/community-review-labeler.yml b/.github/workflows/community-review-labeler.yml
index 7e61b6e..581c6ee 100644
--- a/.github/workflows/community-review-labeler.yml
+++ b/.github/workflows/community-review-labeler.yml
@@ -1,7 +1,7 @@
 name: Community Review Labeler
 
 on:
-  pull_request_target:
+  pull_request_review:
     types: [submitted, dismissed]
 
 permissions: