build

Enable mixin test #1791

Job	Run time
lint	18s
spec (macos-latest, 3.0)	39s
spec (alpine-latest, 3.0)	37s
spec (macos-latest, 3.1)	25s
spec (alpine-latest, 3.1)	36s
spec (macos-latest, 3.2)	55s
spec (alpine-latest, 3.2)	35s
spec (macos-latest, 3.3)	48s
spec (alpine-latest, 3.3-rc)	43s
spec (macos-latest, jruby)	1m 51s
spec (macos-latest, truffleruby)	2m 57s
spec (macos-latest, truffleruby+graalvm)	10m 24s
spec (ubuntu-latest, 3.0)	26s
spec (ubuntu-latest, 3.1)	16s
spec (ubuntu-latest, 3.2)	24s
spec (ubuntu-latest, 3.3)	27s
spec (ubuntu-latest, jruby)	1m 44s
spec (ubuntu-latest, truffleruby)	1m 19s
spec (ubuntu-latest, truffleruby+graalvm)	6m 31s
spec (windows-latest, 3.0)	2m 26s
spec (windows-latest, 3.1)	1m 48s
spec (windows-latest, 3.2)	3m 51s
spec (windows-latest, jruby)	3m 59s
release	5s
	44m 4s

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