Update rubocop-performance requirement from ~> 1.26.0 to ~> 1.27.0 - #647

Warning: Code scanning cannot determine the alerts introduced by this pull request, because 3 configurations present on refs/heads/master were not found:

Default setup

• ❓  /language:actions
• ❓  /language:javascript-typescript
• ❓  /language:ruby

View all branch alerts.