.github: add mysql 8.4/3 to arigaio images #1852

Job	Run time
cli	3m 7s
generate-cmp	44s
integration	36s
lint	33s
unit (1.22)	16s
dialect-integration / integration-cockroach	2m 51s
dialect-integration / integration-maria107	3m 35s
dialect-integration / integration-maria102	2m 48s
dialect-integration / integration-maria103	2m 49s
dialect-integration / integration-mysql56	2m 46s
dialect-integration / integration-mysql57	2m 52s
dialect-integration / integration-mysql8	2m 57s
dialect-integration / integration-postgres10	3m 13s
dialect-integration / integration-postgres11	3m 3s
dialect-integration / integration-postgres12	3m 4s
dialect-integration / integration-postgres13	3m 13s
dialect-integration / integration-postgres14	3m 9s
dialect-integration / integration-postgres15	3m 16s
dialect-integration / integration-postgres-ext-postgis	3m 16s
dialect-integration / integration-sqlite	2m 27s
dialect-integration / integration-tidb5	3m 23s
dialect-integration / integration-tidb6	3m 25s
	57m 23s

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