chore(deps): bump openresty from 1.21.4.1 to 1.21.4.2 #27454

Job	Run time
build / Build dependencies	12m 45s
DB-less integration tests	19m 11s
Postgres integration - first (01-04) tests	20m 33s
Postgres integration - second (>= 05) tests	25m 43s
Postgres plugins - first (01-04) tests	10m 33s
Postgres plugins - second (>= 05) tests	11m 49s
Lint, Doc and Unit tests	5m 2s
PDK tests	3m 50s
Luacov stats aggregator	0s
	1h 49m 26s

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