Changes to Update user profile

the request property avatar_url became optional

the request property description became optional

the request property links became optional

the request property name became optional

the request property username became optional

request property description list-of-types was widened by adding types null to media type application/json

request property links list-of-types was widened by adding types null to media type application/json

request property name list-of-types was widened by adding types null to media type application/json

request property username list-of-types was widened by adding types null to media type application/json