refactor: `Console::showHeader()` call `date()` only once (#9616) #13393

Job	Run time
Setup PHP Version for Code Coverage	3s
Others (8.2) / Sanity Tests	3m 58s
Others (8.3) / Sanity Tests	2m 49s
Others (8.4) / Sanity Tests	2m 24s
Others (8.1) / Sanity Tests	2m 19s
SeparateProcess (8.2) / tests	3m 25s
SeparateProcess (8.3) / tests	3m 19s
SeparateProcess (8.1) / tests	3m 46s
DatabaseLive (8.1, MySQLi, 5.7) / tests	3m 13s
SeparateProcess (8.4) / tests	4m 1s
DatabaseLive (8.1, MySQLi, 8.0) / tests	5m 8s
DatabaseLive (8.1, Postgre, 8.0) / tests	2m 51s
DatabaseLive (8.1, SQLSRV, 8.0) / tests	5m 6s
DatabaseLive (8.2, Postgre, 8.0) / tests	3m 40s
DatabaseLive (8.3, Postgre, 8.0) / tests	2m 32s
DatabaseLive (8.4, MySQLi, 8.0) / tests	5m 32s
DatabaseLive (8.2, SQLSRV, 8.0) / tests	6m 0s
DatabaseLive (8.2, SQLite3, 8.0) / tests	3m 54s
DatabaseLive (8.3, MySQLi, 8.0) / tests	5m 1s
DatabaseLive (8.3, OCI8, 8.0) / tests	6m 49s
DatabaseLive (8.4, Postgre, 8.0) / tests	3m 39s
DatabaseLive (8.1, OCI8, 8.0) / tests	6m 25s
DatabaseLive (8.4, OCI8, 8.0) / tests	6m 38s
DatabaseLive (8.4, SQLSRV, 8.0) / tests	6m 5s
DatabaseLive (8.2, OCI8, 8.0) / tests	6m 52s
DatabaseLive (8.3, SQLSRV, 8.0) / tests	5m 7s
DatabaseLive (8.2, MySQLi, 8.0) / tests	5m 49s
DatabaseLive (8.4, SQLite3, 8.0) / tests	2m 24s
DatabaseLive (8.1, SQLite3, 8.0) / tests	2m 56s
DatabaseLive (8.3, SQLite3, 8.0) / tests	2m 46s
CacheLive (8.2) / Cache Live Tests	2m 28s
CacheLive (8.4) / Cache Live Tests	1m 57s
CacheLive (8.3) / Cache Live Tests	2m 10s
CacheLive (8.1) / Cache Live Tests	2m 8s
Upload coverage results to Coveralls / coveralls	1m 3s
	2h 14m 17s

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