test

Bump step-security/harden-runner from 2.12.0 to 2.12.1 #700

Job	Run time
ruby-versions / Generate Ruby versions	5s
test (ubuntu-latest, 3.2)	20s
test (ubuntu-latest, 2.3)	44s
test (ubuntu-latest, 2.5)	44s
test (ubuntu-latest, 2.7)	44s
test (ubuntu-latest, 2.6)	50s
test (ubuntu-latest, 3.1)	19s
test (ubuntu-latest, 3.0)	19s
test (ubuntu-latest, 3.3)	18s
test (ubuntu-latest, truffleruby)	53s
test (ubuntu-latest, 2.4)	43s
test (windows-latest, 2.4)	2m 28s
test (windows-latest, 2.3)	1m 52s
test (ubuntu-latest, jruby)	3m 31s
test (windows-latest, 2.7)	3m 5s
test (windows-latest, 3.3)	1m 37s
test (windows-latest, 3.0)	1m 56s
test (ubuntu-latest, jruby-head)	4m 19s
test (windows-latest, 3.4)	1m 49s
test (windows-latest, 2.5)	2m 55s
test (ubuntu-latest, head)	15s
test (windows-latest, head)	1m 36s
test (windows-latest, 2.6)	2m 49s
test (windows-latest, 3.1)	1m 14s
test (ubuntu-latest, 3.4)	15s
test (windows-latest, 3.2)	1m 37s
	37m 17s

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