Update munit, munit-scalacheck to 1.0.0-M11 #2038

Job	Run time
build (2_12, mima)	1m 17s
conformance	3m 59s
build (2_12, e2e)	7s
build (2_12, test)	1m 18s
build (2_13, mima)	1m 24s
build (2_13, e2e)	4s
build (2_13, test)	55s
build (3, mima)	4s
build (3, e2e)	8s
build (3, test)	40s
build (2_12, examples_and_formatting)	2m 53s
build (2_13, scala3_compat_test)	1m 30s
build (3, scala3_compat_test)	52s
ci-passed	0s
	15m 11s

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