Update CHANGELOG.md

Author: doluk

CHANGELOG.md

@@ -55,6 +55,8 @@ These changes are available on the `master` branch, but have not yet been releas
   ([#2714](https://github.com/Pycord-Development/pycord/pull/2714))
 - Added the ability to pass a `datetime.time` object to `format_dt`
   ([#2747](https://github.com/Pycord-Development/pycord/pull/2747))
+- Added the ability to pass default values into `ui.Select` of type `ComponentType.channel_select`, `ComponentType.
+  user_select`, `ComponentType.role_select` and `ComponentType.mentionable_select`
 
 ### Fixed