chore: document custom JWKs in broadcast endpoint (#3793) #1813

Job	Run time
Run OIDC conformity tests	8m 30s
Generate SDKs	3m 33s
Run tests and lints	17m 44s
Run HSM tests	6m 6s
Run end-to-end tests (memory)	4m 49s
Run end-to-end tests (memory, --jwt)	4m 44s
Run end-to-end tests (postgres)	4m 38s
Run end-to-end tests (postgres, --jwt)	8m 20s
Run end-to-end tests (mysql)	5m 4s
Run end-to-end tests (mysql, --jwt)	4m 55s
Run end-to-end tests (cockroach)	5m 23s
Run end-to-end tests (cockroach, --jwt)	5m 12s
Generate changelog	43s
Build CLI docs	54s
Generate release	0s
Render version schema	0s
Release SDKs	0s
Draft newsletter	0s
Pending approval Slack notification	0s
Send newsletter	0s
	1h 20m 35s

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