Update claims instead of overwrite from webhook response #2044

Job	Run time
Run OIDC conformity tests	8m 29s
Generate SDKs	3m 36s
Run tests and lints	10m 50s
Run HSM tests	6m 40s
Run end-to-end tests (memory)	5m 2s
Run end-to-end tests (memory, --jwt)	4m 53s
Run end-to-end tests (postgres)	5m 0s
Run end-to-end tests (postgres, --jwt)	5m 4s
Run end-to-end tests (mysql)	5m 3s
Run end-to-end tests (mysql, --jwt)	5m 28s
Run end-to-end tests (cockroach)	5m 28s
Run end-to-end tests (cockroach, --jwt)	5m 46s
Generate changelog	0s
Build CLI docs	0s
Generate release	0s
Render version schema	0s
Draft newsletter	0s
Release SDKs	0s
Pending approval Slack notification	0s
Send newsletter	0s
	1h 11m 19s

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