Merge pull request #1511 from lovro-bikic/rails-where-exists-multiple… #730

Job	Run time
Spec - JRuby	2m 26s
Prism	34s
Spec - 3.0	23s
Spec - 2.7	31s
Spec - 3.1	31s
Spec - 3.3	23s
Spec - 3.4	20s
Spec - 3.2	19s
Spec - head	20s
Check the oldest supported RuboCop version	31s
Check documentation syntax	15s
	6m 33s

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