chore: update changelog

Author: AlCalzone

CHANGELOG.md

@@ -3,6 +3,9 @@
     Placeholder for the next version (at the beginning of the line):
     ## **WORK IN PROGRESS**
 -->
+## **WORK IN PROGRESS**
+* Breaking: Releases can only be created from the default branch (usually `main` or `master`) now. To configure this behavior, use the `branchPattern` option, e.g. `--branchPattern release/*` to allow releases from branches starting with `release/`.
+
 ## 4.0.0 (2025-10-07)
 * Dependency upgrades
 * Switch to ESM module format