test

Add support for %type declarations using `%nterm` in Nonterminal Symbols #1441

Job	Run time
check-misc (head)	8s
steep-check (head)	25s
test-memory (head)	30s
test-windows (head)	2m 5s
test-ruby (head, master)	5m 52s
test-ruby (3.0, master)	5m 45s
ruby-versions / Generate Ruby versions	3s
test (2.5)	25s
test-cpp (head, g++)	16s
test (2.6)	27s
test-cpp (head, clang++)	13s
test (2.7)	25s
test (3.0)	12s
test (3.1)	17s
test (3.2)	13s
test (3.3)	12s
test (head)	12s
	17m 40s

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