[Mapbox Java] changelog for v7.7.0 (#1620)

Co-authored-by: root <root@ba58ffaafdeb>

Author: mapbox-github-ci-writer-public-1[bot]

CHANGELOG.md

@@ -3,7 +3,10 @@
 Mapbox welcomes participation and contributions from everyone.
 
 ### main
-- Added `RouteLeg#notifications`.
+
+### v7.7.0 - August 13, 2025
+- Add `RouteLeg#notifications`
+
 
 ### v7.6.0 - August 01, 2025