fix spinach needing racc #501

Job	Run time
build (3.0, ubuntu-latest, spec)	2m 9s
build (3.0, windows-latest, spec)	20m 33s
build (3.1, ubuntu-latest, spec)	1m 46s
build (3.1, windows-latest, spec)	6m 49s
build (3.2, ubuntu-latest, spec)	1m 44s
build (3.2, windows-latest, spec)	8m 32s
build (3.3, ubuntu-latest, spec)	2m 47s
build (3.3, windows-latest, spec)	14m 16s
build (head, ubuntu-latest, spec)	17s
build (head, windows-latest, spec)	1m 51s
build (jruby-head, ubuntu-latest, spec)	13m 30s
build (jruby-head, windows-latest, spec)	2m 2s
build (3.0, ubuntu-latest, rubocop)	16s
	1h 16m 32s

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