Bump tslib from 2.6.3 to 2.8.0 #1839

Job	Run time
Check conditional workflows and jobs	10s
Admin Client	53s
Build Keycloak	6m 37s
Account UI	1m 7s
Admin UI	1m 48s
Keycloak JS	53s
UI Shared	1m 4s
Generate Test Seed	1s
Account UI E2E	3m 4s
Admin UI E2E (1, chrome)	9m 0s
Admin UI E2E (2, chrome)	6m 43s
Admin UI E2E (3, chrome)	9m 7s
Admin UI E2E (4, chrome)	10m 58s
Admin UI E2E (5, chrome)	6m 1s
Status Check - Keycloak JavaScript CI	6s
	57m 32s

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