[skip ci] Update changelogs for v0.19.0-beta.1 release

GitOrigin-RevId: 4c8218a25a80f67c9d9a5d2dc0fb03005b91653e

Author: Kylmakalle

CHANGELOG.md

@@ -4,6 +4,8 @@ Mapbox welcomes participation and contributions from everyone.
 
 ## main
 
+## 11.19.0-beta.1 - 28 January, 2026
+
 ### Features ✨ and improvements 🏁
 * Introduce experimental `queryRenderedRasterValues` API for querying the rendered raster array value at a point on the map.
 * Introduce new `LineLayer.lineElevationGroundScale` property to scale elevated lines with terrain exaggeration.