feat: add prompt=registration parameter #1573

Job	Run time
Run OIDC conformity tests	10m 52s
Generate SDKs	1m 53s
Run HSM tests	10m 2s
Run tests and lints	20m 24s
Run end-to-end tests (memory)	7m 14s
Run end-to-end tests (memory, --jwt)	6m 59s
Run end-to-end tests (postgres)	7m 8s
Run end-to-end tests (postgres, --jwt)	8m 30s
Run end-to-end tests (mysql)	9m 1s
Run end-to-end tests (mysql, --jwt)	7m 37s
Run end-to-end tests (cockroach)	8m 55s
Run end-to-end tests (cockroach, --jwt)	7m 19s
Build CLI docs	1m 28s
Generate changelog	0s
Generate release	0s
Release SDKs	0s
Draft newsletter	0s
Render version schema	0s
Pending approval Slack notification	0s
Send newsletter	0s
	1h 47m 22s

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