Property was renamed in aca-py

- `is_active` => `is_ready`

Signed-off-by: Wade Barnes <[email protected]>

credential-registry/message_families/issuer_registration/indy_catalyst_issuer_registration/routes.py

@@ -130,7 +130,7 @@ async def issuer_registration_send(request: web.BaseRequest):
     except StorageNotFoundError:
         return web.BaseRequest("Connection not found.")
 
-    if connection.is_active:
+    if connection.is_ready:
         (
             issuer_registration_state,
             issuer_registration_message,