fix: use media.discordapp.net for gif stickers (#1189)

Author: shiftinv

changelog/1189.bugfix.rst

@@ -0,0 +1 @@
+Fix base URL for stickers with :attr:`StickerFormatType.gif`.

disnake/asset.py

@@ -195,6 +195,9 @@ class Asset(AssetMixin):
 
     BASE = "https://cdn.discordapp.com"
 
+    # only used in special cases where Discord doesn't provide an asset on the CDN url
+    BASE_MEDIA = "https://media.discordapp.net"
+
     def __init__(self, state: AnyState, *, url: str, key: str, animated: bool = False) -> None:
         self._state: AnyState = state
         self._url: str = url

disnake/sticker.py

@@ -128,7 +128,9 @@ class _StickerTag(Hashable, AssetMixin):
     @property
     def url(self) -> str:
         """:class:`str`: The url for the sticker's image."""
-        return f"{Asset.BASE}/stickers/{self.id}.{self.format.file_extension}"
+        # https://github.com/discord/discord-api-docs/issues/6675#issuecomment-1954755672
+        base = Asset.BASE_MEDIA if self.format is StickerFormatType.gif else Asset.BASE
+        return f"{base}/stickers/{self.id}.{self.format.file_extension}"
 
     async def read(self) -> bytes:
         """|coro|