Move Ruby 3.3 to the "default" version #71

Job	Run time
Ruby 2.6 - macos-latest	1m 7s
Ruby 2.7 - macos-latest	1m 18s
Ruby 3.0 - macos-latest	23s
Ruby 3.1 - macos-latest	22s
Ruby 3.2 - macos-latest	22s
Ruby 3.3 - macos-latest	42s
Ruby head - macos-latest	19s
Ruby jruby - macos-latest	1m 31s
Ruby jruby-head - macos-latest	1m 32s
Ruby truffleruby - macos-latest	48s
Ruby truffleruby+graalvm - macos-latest	8m 10s
Ruby 2.6 - ubuntu-20.04	28s
Ruby 2.7 - ubuntu-20.04	28s
Ruby 3.0 - ubuntu-20.04	10s
Ruby 3.1 - ubuntu-20.04	13s
Ruby 3.2 - ubuntu-20.04	16s
Ruby 3.3 - ubuntu-20.04	18s
Ruby head - ubuntu-20.04	13s
Ruby jruby - ubuntu-20.04	1m 6s
Ruby jruby-head - ubuntu-20.04	1m 4s
Ruby truffleruby - ubuntu-20.04	34s
Ruby truffleruby+graalvm - ubuntu-20.04	3m 3s
Ruby mingw - windows-latest	1m 22s
Ruby mswin - windows-latest	56s
Ruby jruby - windows-latest	2m 49s
Ruby head - ubuntu-22.04	13s
Ruby 3.1 - ubuntu-22.04	16s
Ruby 3.2 - ubuntu-22.04	16s
Ruby 3.3 - ubuntu-22.04	20s
Ruby truffleruby+graalvm-head - ubuntu-22.04	3m 2s
Ruby truffleruby-head - ubuntu-22.04	2m 10s
	35m 51s

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