Move Ruby 3.3 to the "default" version #72

Job	Run time
Ruby 2.6 - macos-latest	59s
Ruby 2.7 - macos-latest	51s
Ruby 3.0 - macos-latest	26s
Ruby 3.1 - macos-latest	29s
Ruby 3.2 - macos-latest	28s
Ruby 3.3 - macos-latest	56s
Ruby head - macos-latest	25s
Ruby jruby - macos-latest	1m 51s
Ruby jruby-head - macos-latest	1m 15s
Ruby truffleruby - macos-latest	1m 19s
Ruby truffleruby+graalvm - macos-latest	7m 5s
Ruby 2.6 - ubuntu-20.04	33s
Ruby 2.7 - ubuntu-20.04	28s
Ruby 3.0 - ubuntu-20.04	21s
Ruby 3.1 - ubuntu-20.04	18s
Ruby 3.2 - ubuntu-20.04	20s
Ruby 3.3 - ubuntu-20.04	27s
Ruby head - ubuntu-20.04	13s
Ruby jruby - ubuntu-20.04	1m 12s
Ruby jruby-head - ubuntu-20.04	1m 10s
Ruby truffleruby - ubuntu-20.04	46s
Ruby truffleruby+graalvm - ubuntu-20.04	3m 32s
Ruby mingw - windows-latest	1m 46s
Ruby mswin - windows-latest	1m 33s
Ruby jruby - windows-latest	2m 6s
Ruby head - ubuntu-22.04	15s
Ruby 3.1 - ubuntu-22.04	17s
Ruby 3.2 - ubuntu-22.04	16s
Ruby 3.3 - ubuntu-22.04	26s
Ruby truffleruby+graalvm-head - ubuntu-22.04	3m 27s
Ruby truffleruby-head - ubuntu-22.04	56s
	36m 26s

Provide feedback