sync with pycord

Author: Lumabots

CHANGELOG.md

@@ -281,6 +281,11 @@ These changes are available on the `master` branch, but have not yet been releas
 - Fixed support emoji aliases like `:smile:` in PartialEmoji.from_str
   ([#2774](https://github.com/Pycord-Development/pycord/pull/2774))
 
+  ([#2767](https://github.com/Pycord-Development/pycord/pull/2767))
+- Fixed `Webhook.edit` not working with `attachments=[]`.
+  ([#2779](https://github.com/Pycord-Development/pycord/pull/2779))
+- Fixed GIF-based `Sticker` returning the wrong `url`.
+  ([#2781](https://github.com/Pycord-Development/pycord/pull/2781))
 
 ### Changed