Changes to POST /v1/applications/:application_id/auth/password/sign-up

added the new required request property email

added the new required request property password

the request's body type changed from no type to object

removed PasswordSignIn subschema #2 from the request body allOf list

added the new optional request property first_name

added the new optional request property last_name

added the new optional request property locale

added the optional property affected_users to the response with the 403 status