ci(action-semantic-pull-request): Fix for PRs from forks (#941)

Suppress `zizmor`'s error: we do want `pull_request_target` - https://github.com/amannn/action-semantic-pull-request#event-triggers

Author: yermulnik

.github/workflows/pr-title.yml

@@ -1,10 +1,11 @@
 name: Validate PR title
 
-on:
-  pull_request:
+on:  # zizmor: ignore[dangerous-triggers]
+  pull_request_target:
     types:
     - opened
     - edited
+    - reopened
     - synchronize
 
 permissions: