refactor: remove deprecated types in random_string() helper #13351

Job	Run time
Setup PHP Version for Code Coverage	2s
Others (8.1) / Sanity Tests	2m 35s
Others (8.4) / Sanity Tests	2m 33s
Others (8.3) / Sanity Tests	2m 19s
Others (8.2) / Sanity Tests	3m 29s
SeparateProcess (8.1) / tests	3m 32s
SeparateProcess (8.2) / tests	4m 13s
SeparateProcess (8.3) / tests	3m 13s
SeparateProcess (8.4) / tests	3m 5s
DatabaseLive (8.4, MySQLi, 8.0) / tests	5m 20s
DatabaseLive (8.1, SQLSRV, 8.0) / tests	4m 45s
DatabaseLive (8.2, MySQLi, 8.0) / tests	4m 34s
DatabaseLive (8.4, Postgre, 8.0) / tests	2m 25s
DatabaseLive (8.2, Postgre, 8.0) / tests	3m 22s
DatabaseLive (8.2, SQLite3, 8.0) / tests	3m 24s
DatabaseLive (8.3, OCI8, 8.0) / tests	6m 10s
DatabaseLive (8.3, Postgre, 8.0) / tests	2m 34s
DatabaseLive (8.4, OCI8, 8.0) / tests	6m 32s
DatabaseLive (8.4, SQLite3, 8.0) / tests	2m 38s
DatabaseLive (8.1, MySQLi, 8.0) / tests	4m 42s
DatabaseLive (8.1, MySQLi, 5.7) / tests	3m 6s
DatabaseLive (8.1, OCI8, 8.0) / tests	6m 33s
DatabaseLive (8.1, SQLite3, 8.0) / tests	2m 37s
DatabaseLive (8.4, SQLSRV, 8.0) / tests	4m 45s
DatabaseLive (8.3, MySQLi, 8.0) / tests	5m 23s
DatabaseLive (8.3, SQLSRV, 8.0) / tests	5m 3s
DatabaseLive (8.2, SQLSRV, 8.0) / tests	5m 19s
DatabaseLive (8.2, OCI8, 8.0) / tests	7m 32s
CacheLive (8.2) / Cache Live Tests	2m 5s
DatabaseLive (8.3, SQLite3, 8.0) / tests	2m 36s
CacheLive (8.3) / Cache Live Tests	2m 21s
CacheLive (8.1) / Cache Live Tests	1m 57s
CacheLive (8.4) / Cache Live Tests	1m 57s
DatabaseLive (8.1, Postgre, 8.0) / tests	2m 44s
Upload coverage results to Coveralls / coveralls	33s
	2h 5m 58s

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