sql/migrate: support `GO` command in lexer (#3299) #2012

Job	Run time
lint	39s
integration	34s
cli	2m 59s
generate-cmp	43s
unit (1.22)	29s
dialect-integration / integration-mysql56	2m 48s
dialect-integration / integration-maria107	2m 53s
dialect-integration / integration-mysql8	3m 14s
dialect-integration / integration-mysql57	2m 55s
dialect-integration / integration-maria102	2m 59s
dialect-integration / integration-maria103	2m 48s
dialect-integration / integration-postgres10	3m 10s
dialect-integration / integration-postgres-ext-postgis	3m 1s
dialect-integration / integration-postgres11	3m 9s
dialect-integration / integration-postgres12	3m 3s
dialect-integration / integration-postgres13	3m 13s
dialect-integration / integration-postgres14	3m 12s
dialect-integration / integration-cockroach	2m 47s
dialect-integration / integration-postgres15	3m 14s
dialect-integration / integration-sqlite	2m 20s
dialect-integration / integration-tidb5	3m 28s
dialect-integration / integration-tidb6	3m 22s
	57m 0s

Provide feedback