New features like:

- Heatmaps
- Better label rendering
- Bugfixes

mapbox-gl-native @ 27b21363e62c105db0b040b4c5a5ef31170ebd30

Change-Id: I443fb91ba42065b0de101d13c3bf51713ed01a89
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Paolo Angelelli <paolo.angelelli@qt.io>