Fix Unable to determine `VERSION` #1417

Job	Run time
test (ubuntu-latest, 2.7)	1m 13s
test (ubuntu-latest, 3.0)	1m 3s
test (ubuntu-latest, 3.1)	1m 0s
test (ubuntu-latest, 3.2)	1m 12s
test (macos-latest, 2.7)	2m 41s
test (macos-latest, 3.0)	2m 10s
test (macos-latest, 3.1)	1m 51s
test (macos-latest, 3.2)	4m 5s
test (windows-latest, 2.7)	5m 41s
test (windows-latest, 3.0)	6m 2s
test (windows-latest, 3.1)	7m 16s
test (windows-latest, 3.2)	7m 16s
test (ubuntu-latest, jruby-9.4)	12m 3s
test (ubuntu-latest, truffleruby-head)	9m 54s
	1h 3m 27s

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