fix: rename index in down migration #2115

Job	Run time
Generate SDKs	3m 45s
Run OIDC conformity tests	9m 24s
Run HSM tests	6m 58s
Run tests and lints	18m 7s
Run end-to-end tests (memory)	5m 6s
Run end-to-end tests (memory, --jwt)	4m 59s
Run end-to-end tests (postgres)	5m 6s
Run end-to-end tests (postgres, --jwt)	5m 2s
Run end-to-end tests (mysql)	4m 57s
Run end-to-end tests (mysql, --jwt)	4m 58s
Run end-to-end tests (cockroach)	5m 32s
Run end-to-end tests (cockroach, --jwt)	5m 26s
Build CLI docs	1m 6s
Generate changelog	0s
Generate release	0s
Render version schema	0s
Release SDKs	0s
Draft newsletter	0s
Send newsletter	0s
Pending approval Slack notification	0s
	1h 20m 26s

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