chore: Update changelog

Author: DA-344

CHANGELOG.md

@@ -36,6 +36,8 @@ These changes are available on the `master` branch, but have not yet been releas
   `Permissions.use_external_sounds` and
   `Permissions.view_creator_monetization_analytics`.
   ([#2620](https://github.com/Pycord-Development/pycord/pull/2620))
+- Added helper methods to determine an `Interaction` integration type.
+  ([#2659](https://github.com/Pycord-Development/pycord/pull/2659))
 
 ### Fixed