chore: Bump rubocop-performance 1.20 #2334

Job	Run time
action_pack / ubuntu-latest	1m 42s
action_view / ubuntu-latest	1m 40s
active_job / ubuntu-latest	3m 6s
active_model_serializers / ubuntu-latest	57s
active_record / ubuntu-latest	1m 24s
active_support / ubuntu-latest	1m 48s
all / ubuntu-latest	2m 5s
aws_sdk / ubuntu-latest	5m 33s
base / ubuntu-latest	1m 23s
concurrent_ruby / ubuntu-latest	2m 10s
delayed_job / ubuntu-latest	1m 14s
ethon / ubuntu-latest	2m 21s
excon / ubuntu-latest	1m 38s
faraday / ubuntu-latest	2m 55s
grape / ubuntu-latest	5m 9s
graphql / ubuntu-latest	1m 59s
gruf / ubuntu-latest	58s
http / ubuntu-latest	1m 13s
http_client / ubuntu-latest	37s
httpx / ubuntu-latest	2m 14s
koala / ubuntu-latest	41s
lmdb / ubuntu-latest	1m 1s
net_http / ubuntu-latest	1m 44s
rack / ubuntu-latest	1m 7s
rails / ubuntu-latest	2m 9s
restclient / ubuntu-latest	2m 12s
rspec / ubuntu-latest	1m 36s
sinatra / ubuntu-latest	2m 12s
	54m 48s

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