Bump actions/cache from 3 to 4 #1020

Job	Run time
Ruby 3.2 / semian	3m 4s
Ruby 3.1 / semian	3m 5s
Ruby 3.2 / grpc	6m 29s
Ruby 3.0 / semian	3m 9s
Ruby 3.2 / mysql2	1m 16s
Ruby 2.7 / semian	4m 39s
Ruby 3.2 / net_http	1m 3s
Ruby 3.2 / rails_mysql2	58s
Ruby 3.2 / rails_trilogy	1m 38s
Ruby 3.2 / redis_4	1m 8s
Ruby 3.2 / redis_5	1m 9s
Ruby 3.2 / redis_client	1m 4s
Ruby 3.2 / activerecord_trilogy_adapter	1m 50s
Ruby 3.1 / grpc	1m 16s
Ruby 3.1 / mysql2	1m 17s
Ruby 3.1 / net_http	1m 5s
Ruby 3.1 / rails_mysql2	1m 0s
Ruby 3.1 / rails_trilogy	1m 21s
Ruby 3.1 / redis_4	1m 5s
Ruby 3.1 / redis_5	1m 6s
Ruby 3.1 / redis_client	1m 4s
Ruby 3.1 / activerecord_trilogy_adapter	1m 49s
Ruby 3.0 / grpc	1m 12s
Ruby 3.0 / mysql2	1m 13s
Ruby 3.0 / net_http	1m 3s
Ruby 3.0 / rails_mysql2	57s
Ruby 3.0 / rails_trilogy	1m 9s
Ruby 3.0 / redis_4	1m 4s
Ruby 3.0 / redis_5	1m 2s
Ruby 3.0 / redis_client	1m 6s
Ruby 3.0 / activerecord_trilogy_adapter	1m 41s
Ruby 2.7 / grpc	1m 14s
Ruby 2.7 / mysql2	1m 14s
Ruby 2.7 / net_http	1m 1s
Ruby 2.7 / rails_mysql2	52s
Ruby 2.7 / rails_trilogy	1m 11s
Ruby 2.7 / redis_4	1m 4s
Ruby 2.7 / redis_5	1m 4s
Ruby 2.7 / redis_client	1m 7s
Ruby 2.7 / activerecord_trilogy_adapter	1m 40s
	1h 2m 29s

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