Update disnake/http.py

Co-authored-by: vi <8530778+shiftinv@users.noreply.github.com>
Signed-off-by: Snipy7374 <100313469+Snipy7374@users.noreply.github.com>

Author: Snipy7374

disnake/http.py

@@ -892,8 +892,8 @@ def unpin_message(
     def get_pins(
         self,
         channel_id: Snowflake,
-        before: Optional[Snowflake],
         limit: int,
+        before: Optional[Snowflake] = None,
     ) -> Response[channel.ChannelPins]:
         r = Route(
             "GET",