Try to fix test failure with Ruby 3.3 #66

Job	Run time	Billable time
ruby-versions / Generate Ruby versions	4s	0s
test (2.5, ubuntu-latest)	26s	0s
test (2.5, macos-latest)	1m 11s	0s
test (2.5, windows-latest)	2m 14s	0s
test (2.6, ubuntu-latest)	27s	0s
test (2.6, macos-latest)	1m 2s	0s
test (2.6, windows-latest)	2m 2s	0s
test (2.7, ubuntu-latest)	27s	0s
test (2.7, macos-latest)	50s	0s
test (2.7, windows-latest)	1m 58s	0s
test (3.0, ubuntu-latest)	15s	0s
test (3.0, macos-latest)	24s	0s
test (3.0, windows-latest)	1m 44s	0s
test (3.1, ubuntu-latest)	24s	0s
test (3.1, macos-latest)	23s	0s
test (3.1, windows-latest)	1m 48s	0s
test (3.2, ubuntu-latest)	17s	0s
test (3.2, macos-latest)	34s	0s
test (3.2, windows-latest)	2m 51s	0s
test (3.3, ubuntu-latest)	18s	0s
test (3.3, macos-latest)	40s	0s
test (3.3, windows-latest)	1m 41s	0s
test (head, ubuntu-latest)	22s	0s
test (head, macos-latest)	31s	0s
test (head, windows-latest)	1m 9s	0s
test (jruby, ubuntu-latest)	4m 21s	0s
test (jruby-head, ubuntu-latest)	4m 17s	0s
test (truffleruby, ubuntu-latest)	1m 38s	0s
test (truffleruby-head, ubuntu-latest)	2m 6s	0s
	36m 24s	0s

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