Experimental support for multi-threaded profiling using Vernier #2300

Job	Run time
ruby-versions / Generate Ruby versions	1s
Ruby 2.4, options - null	1m 20s
Ruby 2.5, options - null	47s
Ruby 2.6, options - null	59s
Ruby 2.7, options - null	58s
Ruby 3.0, options - null	46s
Ruby 3.1, options - null	56s
Ruby 3.2, options - { "codecov": 1 }	1m 11s
Ruby 3.3, options - null	1m 1s
Ruby head, options - null	1m 38s
Ruby jruby, options - null	1m 48s
Ruby jruby-head, options - null	1m 41s
	13m 6s

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