Fix current RuboCop offenses #1246

Job	Run time
Specs \| 2.7	37s
Specs \| 3.0	26s
Specs \| 3.1	28s
Specs \| 3.2	27s
Specs \| 3.3	27s
Specs \| head	27s
Coverage \| 2.7	46s
Coding Style \| 3.0	35s
Prism	44s
Specs "modern" \| 3.0	26s
Specs \| jruby	42s
Specs \| jruby-head	44s
Main Gem Specs \| RuboCop: master \| 2.7	2m 1s
Specs \| truffleruby	51s
Main Gem Specs \| RuboCop: master \| 3.0	1m 45s
Specs \| truffleruby-head	1m 8s
Main Gem Specs \| RuboCop: v1.61.0 \| 3.3	1m 54s
	14m 28s

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