[skip ci] Update changelogs for v0.23.0-rc.1 release

GitOrigin-RevId: 05ca7a497d3ecc8822f1c44b92460da200a53fd0

Author: github-actions[bot]

CHANGELOG.md

@@ -4,6 +4,8 @@ Mapbox welcomes participation and contributions from everyone.
 
 ## main
 
+## 11.23.0-rc.1 - 20 April, 2026
+
 ## 11.20.3 - 14 April, 2026
 ## 11.22.0 - 16 April, 2026