[fix] callback url validation (#2959)

lnbits/core/views/admin_api.py

@@ -16,6 +16,7 @@ from lnbits.core.services import (
     get_balance_delta,
     update_cached_settings,
 )
+from lnbits.core.services.settings import dict_to_settings
 from lnbits.decorators import check_admin, check_super_user
 from lnbits.server import server_restart
 from lnbits.settings import AdminSettings, Settings, UpdateSettings, settings
@@ -71,6 +72,15 @@ async def api_update_settings(data: UpdateSettings, user: User = Depends(check_a
     return {"status": "Success"}
 
 
+@admin_router.patch(
+    "/api/v1/settings",
+    status_code=HTTPStatus.OK,
+)
+async def api_update_settings_partial(data: dict, user: User = Depends(check_admin)):
+    updatable_settings = dict_to_settings({**settings.dict(), **data})
+    return await api_update_settings(updatable_settings, user)
+
+
 @admin_router.get(
     "/api/v1/settings/default",
     status_code=HTTPStatus.OK,