Tests

feat: updating schema mapping to support additional column metadata. #277

Job	Run time
build (3.7)	47s
Integration (mysql-connector-j)	6m 14s
build (3.8)	1m 3s
build (3.9)	1m 4s
build (3.10)	1m 3s
build (3.11)	1m 3s
build (3.12)	1m 4s
	12m 18s

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