Reduce memory usage in `ResultCache#rubocop_checksum`
Reduce memory usage in `ResultCache#rubocop_checksum`

jmks/rubocop,tdeo/rubocop,jmks/rubocop,tdeo/rubocop,rrosenblum/rubocop,maxjacobson/rubocop,tejasbubane/rubocop,tejasbubane/rubocop,jmks/rubocop,rrosenblum/rubocop,bbatsov/rubocop,maxjacobson/rubocop,maxjacobson/rubocop,tejasbubane/rubocop,tdeo/rubocop,rrosenblum/rubocop,bbatsov/rubocop