Update dependency rubocop to '~> 1.87.0' #174

Job	Run time
Puppet Syntax	1m 19s
RELENG checks	1m 19s
Puppet Style	1m 19s
File checks	1m 10s
Ruby Style	1m 12s
Puppet Spec (Puppet 7.x [SIMP 6.6/PE 2021.7], ~> 7.0, 2.7, false)	1m 40s
Puppet Spec (Puppet 8.x, ~> 8.0, 3.2, false)	1m 48s
	9m 47s

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