[ruby/prism] Recompile when config.yml changes #77

Job	Run time
make (ruby, combo build test, --enable-yjit --enable-zjit)	3m 54s
make (check, --zjit-disable-hir-opt --zjit-call-threshold=1, -T --zjit-disable-hir-opt -T --zjit-...	15m 18s
make (check, --zjit-call-threshold=1, -T --zjit-call-threshold=1, --enable-zjit=dev)	18m 36s
ruby-bench (--zjit-call-threshold=2, --warmup=1 --bench=1 --excludes=lobsters,shipit, --enable-zj...	13m 53s
make (zjit-check, --enable-yjit=dev --enable-zjit, 1.85.0)	5m 12s
ZJIT macOS result	4s
	56m 57s

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