Add specs using keywords as implicit Hash values #1729

Job	Run time
RuboCop	24s
specs (ubuntu, 3.0.6)	1m 6s
specs (ubuntu, 3.1.4)	1m 34s
specs (ubuntu, 3.2.2)	2m 3s
specs (ubuntu, 3.3.0)	1m 26s
specs (macos, 3.0.6)	1m 9s
specs (macos, 3.1.4)	1m 19s
specs (macos, 3.2.2)	1m 15s
specs (macos, 3.3.0)	1m 8s
specs (windows, 3.0.6)	4m 23s
specs (windows, 3.1.4)	5m 55s
specs (windows, 3.2.2)	7m 0s
specs (windows, 3.3.0)	5m 32s
specs (ubuntu, 3.3.0, --enable-frozen-string-literal)	1m 30s
	35m 44s

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