docs: add changelog entry for target-branch feature

Author: vaind

CHANGELOG.md

@@ -44,6 +44,7 @@ To update your existing Danger workflows:
 
 ### Features
 
+- Updater now supports targeting non-default branches via the new `target-branch` input parameter ([#118](https://github.com/getsentry/github-workflows/pull/118))
 - Updater now supports filtering releases by GitHub release title patterns, e.g. to support release channels ([#117](https://github.com/getsentry/github-workflows/pull/117))
 - Updater now supports dependencies without changelog files by falling back to git commit messages ([#116](https://github.com/getsentry/github-workflows/pull/116))
 - Danger - Improve conventional commit scope handling, and non-conventional PR title support ([#105](https://github.com/getsentry/github-workflows/pull/105))