[Mapbox Java] changelog for v6.15.0 (#1572)

Co-authored-by: root <root@99d26852d82b>

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

CHANGELOG.md

@@ -4,8 +4,11 @@ Mapbox welcomes participation and contributions from everyone.
 
 ### main
 
+### v6.15.0 - November 13, 2023
+
 - Added `DirectionsCriteria#PAYMENT_METHOD_ETC2` option to pass as `RouteOptions#computeTollCosts` and to receive in `IntersectionsLanes#paymentMethods`.
 
+
 ### v6.14.0 - October 26, 2023
 
 - Added `LegAnnotation#freeflowSpeed` and `LegAnnotation#currentSpeed`. To receive these annotations, pass `DirectionsCriteria.ANNOTATION_FREEFLOW_SPEED` and `DirectionsCriteria.ANNOTATION_CURRENT_SPEED` in the request in the "annotations" parameter.