chore: 📝 Update CHANGELOG.md

Signed-off-by: hich4t <[email protected]>

Author: hich4t

CHANGELOG.md

@@ -67,6 +67,8 @@ These changes are available on the `master` branch, but have not yet been releas
   ([#2817](https://github.com/Pycord-Development/pycord/pull/2817))
 - Added role gradients support with `Role.colours` and the `RoleColours` class.
   ([#2818](https://github.com/Pycord-Development/pycord/pull/2818))
+- Added `discord.Interaction.attachment_size_limit`.
+  ([#2854](https://github.com/Pycord-Development/pycord/pull/2854))
 
 ### Fixed