Fix some rubocop offenses #286

Job	Run time
Confirm config and documentation	12s
Test coverage	17s
Edge RuboCop: internal_investigation	17s
Edge RuboCop: spec	16s
Ruby 2.7: internal_investigation	27s
Prism	57s
RSpec 4	13s
Ruby 2.7: spec	29s
Ruby 3.0: internal_investigation	14s
Ruby 3.0: spec	13s
Ruby 3.1: internal_investigation	15s
Ruby 3.1: spec	16s
Ruby 3.2: internal_investigation	15s
Ruby 3.2: spec	22s
Ruby 3.3: internal_investigation	14s
Ruby 3.3: spec	14s
Ruby ruby-head: internal_investigation	14s
Ruby ruby-head: spec	19s
Ruby jruby-9.4: internal_investigation	55s
Ruby jruby-9.4: spec	58s
	7m 37s

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