Reset CHANGELOG.md to master

Author: sameerank

CHANGELOG.md

@@ -2,10 +2,6 @@
 
 ## [Unreleased]
 
-### Changed
-
-* Core: Upgrade libdatadog dependency to version 24.0.0 ([#5045][])
-
 ## [2.22.0] - 2025-10-15
 
 ### Added
@@ -5137,4 +5133,4 @@ Git diff: https://github.com/DataDog/dd-trace-rb/compare/v0.3.0...v0.3.1
 [@y-yagi]: https://github.com/y-yagi
 [@yujideveloper]: https://github.com/yujideveloper
 [@yukimurasawa]: https://github.com/yukimurasawa
-[@zachmccormick]: https://github.com/zachmccormick
+[@zachmccormick]: https://github.com/zachmccormick