Update hip-1215.md (#1304)

Signed-off-by: Keith Kowal <keith.kowal@swirldslabs.com>

Author: Reccetech

HIP/hip-1215.md

@@ -10,7 +10,7 @@ needs-hiero-approval: Yes
 needs-hedera-review: Yes
 hedera-review-date:
 hedera-acceptance-decision:
-status: Last Call
+status: Approved
 last-call-date-time: 2025-07-14T07:00:00Z
 created: 2025-04-09
 discussions-to: https://github.com/hiero-ledger/hiero-improvement-proposals/discussions/1096