fix: update MFA migration to depend on latest upstream migration

- Change down_revision from 0ab65e1cc7fa to 58eb7bdb93fe
- Ensures migration chain is properly linked with MCP server migration

api/migrations/versions/2025_07_08_1500-abc123def456_add_account_mfa_settings_table.py

@@ -10,7 +10,7 @@ import sqlalchemy as sa
 
 # revision identifiers, used by Alembic.
 revision = 'abc123def456'
-down_revision = '0ab65e1cc7fa'
+down_revision = '58eb7bdb93fe'
 branch_labels = None
 depends_on = None