Add spec for JSONLoad autocorrect
Add spec for JSONLoad autocorrect

Before, the autocorrect feature of `Security/JSONLoad` was not tested at all.

This change increases coverage for lib/rubocop/cop/security/json_load.rb from
90.91 % to 100 %.

smakagon/rubocop,rrosenblum/rubocop,sue445/rubocop,jfelchner/rubocop,maxjacobson/rubocop,maxjacobson/rubocop,bquorning/rubocop,bbatsov/rubocop,vergenzt/rubocop,meganemura/rubocop,haziqhafizuddin/rubocop,smakagon/rubocop,maxjacobson/rubocop,akihiro17/rubocop,sue445/rubocop,panthomakos/rubocop,panthomakos/rubocop,jmks/rubocop,mikegee/rubocop,jfelchner/rubocop,palkan/rubocop,scottmatthewman/rubocop,sue445/rubocop,mikegee/rubocop,rrosenblum/rubocop,vergenzt/rubocop,panthomakos/rubocop,petehamilton/rubocop,scottmatthewman/rubocop,akihiro17/rubocop,akihiro17/rubocop,rrosenblum/rubocop,palkan/rubocop,tejasbubane/rubocop,vergenzt/rubocop,petehamilton/rubocop,bbatsov/rubocop,tejasbubane/rubocop,deivid-rodriguez/rubocop,palkan/rubocop,tdeo/rubocop,tdeo/rubocop,tdeo/rubocop,bquorning/rubocop,meganemura/rubocop,jmks/rubocop,deivid-rodriguez/rubocop,meganemura/rubocop,bquorning/rubocop,jmks/rubocop,haziqhafizuddin/rubocop,jfelchner/rubocop,mikegee/rubocop,deivid-rodriguez/rubocop,tejasbubane/rubocop,petehamilton/rubocop