fix: rename index in down migration #2116

Job	Run time
Run OIDC conformity tests	9m 7s
Generate SDKs	3m 34s
Run tests and lints	19m 55s
Run HSM tests	7m 51s
Run end-to-end tests (memory)	5m 16s
Run end-to-end tests (memory, --jwt)	4m 55s
Run end-to-end tests (postgres)	5m 6s
Run end-to-end tests (postgres, --jwt)	5m 19s
Run end-to-end tests (mysql)	5m 4s
Run end-to-end tests (mysql, --jwt)	6m 20s
Run end-to-end tests (cockroach)	5m 21s
Run end-to-end tests (cockroach, --jwt)	5m 29s
Build CLI docs	57s
Generate changelog	0s
Generate release	0s
Release SDKs	0s
Render version schema	0s
Draft newsletter	0s
Pending approval Slack notification	0s
Send newsletter	0s
	1h 24m 14s

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