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Using recommended RuboCop configuration

Authored by zeljkofilipin.

Description

Using recommended RuboCop configuration

As recommended at
https://www.mediawiki.org/wiki/Manual:Coding_conventions/Ruby#Base_confi
guration

For new configuration to work, RuboCop needed to be updated to the
latest released version.

Bug: T94558
Change-Id: I3482f0aadab1f2c2ae0aff02463dd673dc814264