fix: ActiveRecord db patch: support kwargs

[olleolleolle]

This PR repairs rack-mini-profiler's patch to ActiveRecord, adding support for keyword arguments, too.

Details

Before Ruby 2.7, *args, &blk would mean "all args", but with the advent of real keyword arguments, this change is needed.

Inspired by the newrelic solution to the same problem.

• I learned that the Drop support for Ruby 2.7 and 3.0 #632 removed Ruby 2.7 support. So, we don't need the Ruby 2.7 form of the patch.
• Ruby 3.1 failed to build green. Fix: CI: Configure setup-ruby to use a compatible RubyGems in order to build green on Ruby 3.1 #651