Upgrade test matrix #132

Job	Run time
Rails Specs (4.2)	35s
Rails Specs (5.2)	29s
Rails Specs (6.0)	31s
Rails Specs (6.1)	9s
Rails Specs (7.0)	20s
All Specs (2.4, Gemfile)	53s
All Specs (2.4, gemfiles/aws_sdk_core_2.gemfile)	51s
All Specs (2.5, Gemfile)	46s
All Specs (2.5, gemfiles/aws_sdk_core_2.gemfile)	50s
All Specs (2.6, Gemfile)	46s
All Specs (2.6, gemfiles/aws_sdk_core_2.gemfile)	45s
All Specs (2.7, Gemfile)	46s
All Specs (2.7, gemfiles/aws_sdk_core_2.gemfile)	45s
All Specs (3.0, Gemfile)	55s
All Specs (3.0, gemfiles/aws_sdk_core_2.gemfile)	52s
All Specs (3.1, Gemfile)	44s
All Specs (3.1, gemfiles/aws_sdk_core_2.gemfile)	43s
All Specs (3.2, Gemfile)	44s
All Specs (3.2, gemfiles/aws_sdk_core_2.gemfile)	40s
	13m 4s

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