[changelog] Record Dependabot update (#182)

Author: coisa

CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+- GitHub Actions(deps): Bump marocchino/sticky-pull-request-comment from 2 to 3 (#182)
 - Auto-create and push minimal changelog entries for same-repository Dependabot pull requests before changelog validation reruns (#186)
 
 ## [1.20.0] - 2026-04-23