Add Ubuntu 24.04. #288

Job	Run time
Test gemfile depending on Bundler 1	10s
Test with an exact Bundler version	7s
lint	11s
Test with rails4 gemfile	10s
ubuntu-20.04 1.8.7 (default)	14s
ubuntu-20.04 1.9.3 (default)	13s
ubuntu-20.04 2.0 (default)	14s
ubuntu-20.04 jruby-1.7 (default)	1m 17s
ubuntu-20.04 jruby-9.0 (default)	1m 39s
ubuntu-22.04 1.9.3 (default)	18s
ubuntu-22.04 2.0 (default)	13s
ubuntu-22.04 jruby-1.7 (default)	1m 17s
ubuntu-22.04 jruby-9.0 (default)	1m 40s
ubuntu-24.04 1.8.7 (default)	2m 31s
ubuntu-24.04 1.9.3 (default)	2m 26s
ubuntu-24.04 2.0 (default)	2m 29s
ubuntu-24.04 jruby-1.7 (default)	10s
ubuntu-24.04 jruby-9.0 (default)	4s
macos-13 1.9.3 (default)	24s
macos-13 2.0 (default)	30s
macos-13 jruby-1.7 (default)	2m 15s
macos-13 jruby-9.0 (default)	3m 5s
windows-2019 1.9.3 (default)	2m 3s
windows-2019 2.0 (default)	57s
windows-2019 jruby-1.7 (default)	2m 4s
windows-2019 jruby-9.0 (default)	2m 20s
windows-2022 1.9.3 (default)	2m 24s
windows-2022 2.0 (default)	1m 38s
windows-2022 jruby-1.7 (default)	2m 25s
windows-2022 jruby-9.0 (default)	3m 4s
windows-2019 2.0 (x86)	1m 1s
windows-2019 2.0 (x64)	1m 55s
windows-2022 2.0 (x86)	1m 21s
windows-2022 2.0 (x64)	1m 38s
	44m 27s

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