feat!: Drop support for Rails 5, 5.1, 5.2 #290

Job	Run time
Ruby 2.6 Rails 6.1.7 DB sqlite3:test_db	3m 10s
Ruby 2.7 Rails 7.0.4 DB sqlite3:test_db	3m 29s
Ruby 3.0 Rails 7.0.4 DB sqlite3:test_db	1m 51s
Ruby 3.0 Rails 6.1.7 DB sqlite3:test_db	1m 48s
Ruby 2.7 Rails 6.1.7 DB postgresql://postgres:password@localhost:5432/test	3m 46s
Ruby 3.1 Rails 6.1.7 DB sqlite3:test_db	1m 49s
Ruby 2.7 Rails 6.0.6 DB postgresql://postgres:password@localhost:5432/test	3m 25s
Ruby 3.1 Rails 7.0.4 DB postgresql://postgres:password@localhost:5432/test	1m 38s
Ruby 3.0 Rails 6.1.7 DB postgresql://postgres:password@localhost:5432/test	1m 54s
Ruby 3.2 Rails 7.0.4 DB sqlite3:test_db	1m 33s
Ruby 3.0 Rails 7.0.4 DB postgresql://postgres:password@localhost:5432/test	1m 52s
Ruby 2.6 Rails 6.1.7 DB postgresql://postgres:password@localhost:5432/test	3m 31s
Ruby 2.6 Rails 6.0.6 DB postgresql://postgres:password@localhost:5432/test	3m 26s
Ruby 3.2 Rails 7.0.4 DB postgresql://postgres:password@localhost:5432/test	1m 42s
Ruby 2.7 Rails 6.1.7 DB sqlite3:test_db	3m 25s
Ruby 3.2 Rails 6.1.7 DB postgresql://postgres:password@localhost:5432/test	1m 34s
Ruby 3.2 Rails 6.1.7 DB sqlite3:test_db	1m 28s
Ruby 3.1 Rails 7.0.4 DB sqlite3:test_db	1m 44s
Ruby 2.7 Rails 7.0.4 DB postgresql://postgres:password@localhost:5432/test	3m 28s
Ruby 2.6 Rails 6.0.6 DB sqlite3:test_db	3m 35s
Ruby 3.1 Rails 6.1.7 DB postgresql://postgres:password@localhost:5432/test	1m 50s
Ruby 2.7 Rails 6.0.6 DB sqlite3:test_db	3m 32s
	55m 30s

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