Reduce unnecessary duplication of changelog verifier GHA runs (#900)

Signed-off-by: Daniel Widdis <[email protected]>
(cherry picked from commit f58d989)

.github/workflows/changelog_verifier.yml

@@ -1,7 +1,7 @@
 name: "Changelog Verifier"
 on:
   pull_request:
-    types: [opened, edited, review_requested, synchronize, reopened, ready_for_review, labeled, unlabeled]
+    types: [opened, synchronize, reopened, ready_for_review, labeled, unlabeled]
 
 jobs:
   # Enforces the update of a changelog file on every pull request