Tests

Merge pull request #279 from JEG2/upgrade_ruby_341 #84

Job	Run time
test (ubuntu-latest, head)	11s
test (ubuntu-latest, 3.4)	1m 10s
test (ubuntu-latest, 3.3)	12s
test (ubuntu-latest, 3.2)	11s
test (ubuntu-latest, 3.1)	12s
test (ubuntu-latest, 3.0)	12s
test (ubuntu-latest, jruby)	45s
test (ubuntu-latest, jruby-head)	39s
test (ubuntu-latest, truffleruby)	36s
test (ubuntu-latest, truffleruby-head)	39s
test (ubuntu-latest, truffleruby+graalvm)	1m 29s
test (windows-latest, head)	2m 8s
test (windows-latest, 3.4)	3m 43s
test (windows-latest, mingw)	2m 7s
test (windows-latest, mswin)	54s
test (windows-latest, ucrt)	59s
test (macos-latest, head)	16s
test (macos-latest, 3.4)	57s
	17m 20s

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