Changes to Get Binairo Leaderboard

removed the required property current_user_entry/anyOf[subschema #1: LeaderboardEntry]/submitted_at from the response with the 200 status

removed the required property current_user_entry/anyOf[subschema #1: LeaderboardEntry]/user_id from the response with the 200 status

removed the required property entries/items/submitted_at from the response with the 200 status

removed the required property entries/items/user_id from the response with the 200 status