chore: update references to use MySQL 8.0 #14372

Job	Run time
Setup PHP Version for Code Coverage	4s
Others (8.5) / Sanity Tests	2m 29s
Others (8.2) / Sanity Tests	3m 57s
Others (8.4) / Sanity Tests	2m 33s
Others (8.3) / Sanity Tests	2m 38s
CacheLive (8.2) / Cache Live Tests	2m 20s
SeparateProcess (8.3) / tests	3m 45s
DatabaseLive (8.2, MySQLi) / tests	5m 0s
SeparateProcess (8.4) / tests	3m 45s
SeparateProcess (8.5) / tests	3m 36s
DatabaseLive (8.4, SQLite3) / tests	2m 27s
SeparateProcess (8.2) / tests	3m 35s
DatabaseLive (8.3, SQLite3) / tests	2m 29s
DatabaseLive (8.2, SQLite3) / tests	2m 59s
DatabaseLive (8.3, Postgre) / tests	2m 45s
DatabaseLive (8.2, SQLSRV) / tests	6m 19s
DatabaseLive (8.3, OCI8) / tests	7m 48s
CacheLive (8.4) / Cache Live Tests	2m 13s
DatabaseLive (8.4, Postgre) / tests	2m 54s
DatabaseLive (8.3, MySQLi) / tests	4m 33s
CacheLive (8.5) / Cache Live Tests	2m 18s
CacheLive (8.3) / Cache Live Tests	2m 13s
DatabaseLive (8.5, MySQLi) / tests	5m 27s
DatabaseLive (8.5, Postgre) / tests	2m 42s
DatabaseLive (8.4, MySQLi) / tests	4m 38s
DatabaseLive (8.2, OCI8) / tests	7m 36s
DatabaseLive (8.4, OCI8) / tests	6m 34s
DatabaseLive (8.5, SQLSRV) / tests	5m 38s
DatabaseLive (8.5, SQLite3) / tests	2m 10s
DatabaseLive (8.5, OCI8) / tests	6m 53s
DatabaseLive (8.3, SQLSRV) / tests	5m 24s
DatabaseLive (8.2, Postgre) / tests	3m 23s
DatabaseLive (8.4, SQLSRV) / tests	5m 6s
Upload coverage results to Coveralls / coveralls	39s
	2h 8m 50s

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