Update changelogs for v0.21.5 release (#13618)

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
GitOrigin-RevId: 4e9ee93d282d28a31d9bf3c17dbde2b58a2ad45f

Author: kiryldz

CHANGELOG.md

@@ -58,6 +58,11 @@ Mapbox welcomes participation and contributions from everyone.
 ## Dependencies
 * Update gl-native to [v11.24.0-rc.1](https://github.com/mapbox/mapbox-maps-android/releases/tag/v11.24.0-rc.1), common to [v24.24.0-rc.1](https://github.com/mapbox/mapbox-maps-android/releases/tag/v11.24.0-rc.1).
 
+# 11.21.5 May 15, 2026
+## Dependencies
+* Update gl-native to [v11.21.5](https://github.com/mapbox/mapbox-maps-android/releases/tag/v11.21.5), common to [v24.21.5](https://github.com/mapbox/mapbox-maps-android/releases/tag/v11.21.5).
+
+
 # 11.21.4 May 05, 2026
 ## Features ✨ and improvements 🏁
 * Internal fixes and performance improvements.