test: fix determinism of `CacheTest` #14275

Job	Run time
Setup PHP Version for Code Coverage	4s
Others (8.2) / Sanity Tests	3m 48s
Others (8.3) / Sanity Tests	2m 33s
Others (8.5) / Sanity Tests	2m 46s
Others (8.4) / Sanity Tests	2m 34s
SeparateProcess (8.3) / tests	3m 25s
DatabaseLive (8.4, MySQLi, 8.0) / tests	4m 43s
DatabaseLive (8.2, MySQLi, 8.0) / tests	5m 32s
DatabaseLive (8.2, SQLite3, 8.0) / tests	2m 55s
SeparateProcess (8.2) / tests	3m 35s
CacheLive (8.4) / Cache Live Tests	2m 15s
SeparateProcess (8.5) / tests	3m 28s
CacheLive (8.5) / Cache Live Tests	2m 14s
CacheLive (8.3) / Cache Live Tests	2m 11s
DatabaseLive (8.5, MySQLi, 8.0) / tests	4m 11s
DatabaseLive (8.4, Postgre, 8.0) / tests	2m 41s
SeparateProcess (8.4) / tests	3m 35s
DatabaseLive (8.5, SQLite3, 8.0) / tests	2m 35s
DatabaseLive (8.4, OCI8, 8.0) / tests	6m 50s
DatabaseLive (8.4, SQLSRV, 8.0) / tests	5m 34s
DatabaseLive (8.2, MySQLi, 5.7) / tests	3m 42s
DatabaseLive (8.2, OCI8, 8.0) / tests	7m 44s
DatabaseLive (8.3, SQLite3, 8.0) / tests	2m 6s
CacheLive (8.2) / Cache Live Tests	2m 27s
DatabaseLive (8.5, Postgre, 8.0) / tests	2m 48s
DatabaseLive (8.3, SQLSRV, 8.0) / tests	5m 28s
DatabaseLive (8.2, SQLSRV, 8.0) / tests	6m 10s
DatabaseLive (8.5, OCI8, 8.0) / tests	6m 47s
DatabaseLive (8.3, OCI8, 8.0) / tests	6m 53s
DatabaseLive (8.4, SQLite3, 8.0) / tests	2m 10s
DatabaseLive (8.3, Postgre, 8.0) / tests	2m 50s
DatabaseLive (8.2, Postgre, 8.0) / tests	3m 41s
DatabaseLive (8.3, MySQLi, 8.0) / tests	4m 45s
DatabaseLive (8.5, SQLSRV, 8.0) / tests	5m 24s
Upload coverage results to Coveralls / coveralls	48s
	2h 11m 12s

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