Changes to Accept scope invite

the response property user/githubId became nullable for the status 200

changed the pattern of the path request parameter scope from /^[a-z][a-z0-9]*(?:-[a-z0-9]+)*$/ to ^[a-z][a-z0-9]*(?:-[a-z0-9]+)*$

removed the optional property user/email from the response with the 200 status

removed the optional property user/inviteCount from the response with the 200 status

removed the optional property user/isBlocked from the response with the 200 status

removed the optional property user/isStaff from the response with the 200 status

removed the optional property user/scopeLimit from the response with the 200 status

removed the optional property user/scopeUsage from the response with the 200 status

the scope response's property pattern was changed from /^[a-z][a-z0-9]*(?:-[a-z0-9]+)*$/ to ^[a-z][a-z0-9]*(?:-[a-z0-9]+)*$ for the status 200