Simplify regexp to account for prism error messages #3704

Job	Run time
Debug compatibility test	5m 39s
lint	13s
ruby-versions / Generate Ruby versions	2s
vterm-yamatanooroti 2.7 (latest reline)	1m 10s
rake test 2.7 (latest reline)	1m 28s
vterm-yamatanooroti 2.7	1m 6s
rake test 2.7	1m 27s
vterm-yamatanooroti 3.0 (latest reline)	54s
rake test 3.0 (latest reline)	1m 20s
vterm-yamatanooroti 3.0	55s
rake test 3.0	1m 35s
vterm-yamatanooroti 3.1 (latest reline)	51s
rake test 3.1 (latest reline)	1m 20s
vterm-yamatanooroti 3.1	51s
rake test 3.1	1m 18s
vterm-yamatanooroti 3.2 (latest reline)	53s
rake test 3.2 (latest reline)	1m 27s
vterm-yamatanooroti 3.2	50s
rake test 3.2	1m 16s
vterm-yamatanooroti 3.3 (latest reline)	52s
rake test 3.3 (latest reline)	1m 21s
vterm-yamatanooroti 3.3	52s
rake test 3.3	1m 23s
vterm-yamatanooroti head (latest reline)	1m 2s
rake test head (latest reline)	1m 31s
rake test head	1m 37s
vterm-yamatanooroti head	1m 46s
rake test truffleruby-head (latest reline)	2m 43s
rake test truffleruby-head	2m 55s
	40m 37s

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