(maint) Fix cli.benchmark --rand-perc catalog keys #1963

Job	Run time
o (core+ext/openjdk17/pg-14, ubuntu-20.04, 3.2)	12m 50s
o (core+ext/openjdk17/pg-11, ubuntu-20.04, 3.2)	13m 59s
o (rspec/pup-main, ubuntu-20.04, 3.2)	1m 0s
o (lint/openjdk17, ubuntu-20.04, 3.2)	6m 29s
o (int/openjdk17/pup-main/srv-main/pg-14/rich, ubuntu-20.04, 3.2)	17m 58s
o (int/openjdk17/pup-7.x/srv-7.x/pg-14/rich, ubuntu-20.04, 2.7)	20m 9s
o (macos-11, core+ext/openjdk17/pg-14, 3.2)	18m 44s
o (macos-11, int/openjdk17/pup-main/srv-main/pg-14/rich, 3.2)	29m 4s
o (macos-11, rspec/pup-main, 3.2)	2m 35s
	2h 2m 48s

Provide feedback