Add support for Rails 7.1 #31

Job	Run time
test (Gemfile, 3.2)	26s
test (Gemfile, 3.1)	32s
test (Gemfile, 3.0)	31s
test (Gemfile, 2.7)	46s
test (gemfiles/Gemfile-rails-main, 3.2)	29s
test (gemfiles/Gemfile-rails-main, 3.1)	1m 23s
test (gemfiles/Gemfile-rails-main, 3.0)	57s
test (gemfiles/Gemfile-rails-main, 2.7)	58s
test (gemfiles/Gemfile-rails-7-0, 3.2)	17s
test (gemfiles/Gemfile-rails-7-0, 3.1)	15s
test (gemfiles/Gemfile-rails-7-0, 3.0)	16s
test (gemfiles/Gemfile-rails-7-0, 2.7)	43s
test (gemfiles/Gemfile-rails-6-1, 3.2)	20s
test (gemfiles/Gemfile-rails-6-1, 3.1)	18s
test (gemfiles/Gemfile-rails-6-1, 3.0)	22s
test (gemfiles/Gemfile-rails-6-1, 2.7)	39s
test (gemfiles/Gemfile-rails-6-1, 2.6)	36s
test (gemfiles/Gemfile-rails-6-1, 2.5)	37s
test (gemfiles/Gemfile-rails-6-0, 3.0)	25s
test (gemfiles/Gemfile-rails-6-0, 2.7)	31s
test (gemfiles/Gemfile-rails-6-0, 2.6)	34s
test (gemfiles/Gemfile-rails-6-0, 2.5)	35s
test (gemfiles/Gemfile-rails-5-2, 2.6)	41s
test (gemfiles/Gemfile-rails-5-2, 2.5)	33s
	13m 44s

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