fix: missing import

tasks.py

@@ -1,14 +1,14 @@
 import asyncio
-import re
 
 from loguru import logger
 
 from lnbits.core.models import Payment
+
 from lnbits.helpers import get_current_extension_name
 from lnbits.tasks import register_invoice_listener
 
 from .crud import create_account, get_account, update_account
-
+from .models import NostrAccount
 
 async def wait_for_paid_invoices():
     invoice_queue = asyncio.Queue()