Make currentAvatarImageUrl optional on LimitedUserFriend (#508)

Author: Rexios80

openapi/components/schemas/LimitedUserFriend.yaml

@@ -61,7 +61,6 @@ properties:
   userIcon:
     type: string
 required:
-  - currentAvatarImageUrl
   - developerType
   - displayName
   - friendKey