Update ChangeLog

Author: sebastianbergmann

ChangeLog-12.4.md

@@ -2,10 +2,20 @@
 
 All notable changes are documented in this file using the [Keep a CHANGELOG](http://keepachangelog.com/) principles.
 
+## [12.4.1] - 2025-MM-DD
+
+### Changed
+
+* [#1102](https://github.com/sebastianbergmann/php-code-coverage/pull/1102), [#1111](https://github.com/sebastianbergmann/php-code-coverage/pull/1111), [#1112](https://github.com/sebastianbergmann/php-code-coverage/pull/1112), [#1113](https://github.com/sebastianbergmann/php-code-coverage/pull/1113), [#1114](https://github.com/sebastianbergmann/php-code-coverage/pull/1114), [#1115](https://github.com/sebastianbergmann/php-code-coverage/pull/1115), [#1116](https://github.com/sebastianbergmann/php-code-coverage/pull/1116), [#1117](https://github.com/sebastianbergmann/php-code-coverage/pull/1117), [#1118](https://github.com/sebastianbergmann/php-code-coverage/pull/1118), [#1119](https://github.com/sebastianbergmann/php-code-coverage/pull/1119), [#1120](https://github.com/sebastianbergmann/php-code-coverage/pull/1120), [#1121](https://github.com/sebastianbergmann/php-code-coverage/pull/1121), [#1122](https://github.com/sebastianbergmann/php-code-coverage/pull/1122), [#1123](https://github.com/sebastianbergmann/php-code-coverage/pull/1123), [#1124](https://github.com/sebastianbergmann/php-code-coverage/pull/1124): Improve performance of XML report
+* [#1107](https://github.com/sebastianbergmann/php-code-coverage/pull/1107): Do not sort code coverage data over and over
+* [#1108](https://github.com/sebastianbergmann/php-code-coverage/pull/1108): Do not sort covered files data over and over
+* [#1109](https://github.com/sebastianbergmann/php-code-coverage/pull/1109): Represent line coverage data using objects
+
 ## [12.4.0] - 2025-09-24
 
 ### Added
 
 * [#1095](https://github.com/sebastianbergmann/php-code-coverage/pull/1095): Support for light/dark mode in HTML report
 
-[12.4.0]: https://github.com/sebastianbergmann/php-code-coverage/compare/12.3.8...main
+[12.4.1]: https://github.com/sebastianbergmann/php-code-coverage/compare/12.4.0...main
+[12.4.0]: https://github.com/sebastianbergmann/php-code-coverage/compare/12.3.8...12.4.0