refactor: jwk aquire lock when generating #1958

Job	Run time
Run OIDC conformity tests	13m 19s
Generate SDKs	3m 43s
Run tests and lints	21m 27s
Run end-to-end tests (memory)	4m 51s
Run HSM tests	26m 29s
Run end-to-end tests (memory, --jwt)	5m 11s
Run end-to-end tests (postgres)	5m 8s
Run end-to-end tests (postgres, --jwt)	5m 7s
Run end-to-end tests (mysql)	4m 57s
Run end-to-end tests (mysql, --jwt)	5m 16s
Run end-to-end tests (cockroach)	5m 21s
Run end-to-end tests (cockroach, --jwt)	5m 28s
Build CLI docs	0s
Generate changelog	0s
Generate release	0s
Render version schema	0s
Draft newsletter	0s
Release SDKs	0s
Send newsletter	0s
Pending approval Slack notification	0s
	1h 46m 17s

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