Bump react-i18next from 15.2.0 to 15.4.0 in /js #1869

Job	Run time
Check conditional workflows and jobs	7s
Admin Client	1m 3s
Build Keycloak	7m 8s
Admin UI	2m 8s
Account UI	1m 12s
UI Shared	1m 8s
Generate Test Seed	1s
Account UI E2E	3m 2s
Admin UI E2E (1, chrome)	18m 33s
Admin UI E2E (2, chrome)	9m 49s
Admin UI E2E (3, chrome)	6m 0s
Admin UI E2E (4, chrome)	9m 40s
Admin UI E2E (5, chrome)	10m 54s
Status Check - Keycloak JavaScript CI	8s
	1h 10m 53s

Provide feedback