fixed warnings

Author: sanderegg

services/director-v2/tests/unit/with_dbs/comp_scheduler/test_scheduler_dask.py

@@ -1606,7 +1606,9 @@ async def _return_random_task_result(job_id) -> TaskOutputData:
 @pytest.fixture
 def with_fast_service_heartbeat_s(monkeypatch: pytest.MonkeyPatch) -> int:
     seconds = 1
-    monkeypatch.setenv("SERVICE_TRACKING_HEARTBEAT", f"{seconds}")
+    monkeypatch.setenv(
+        "SERVICE_TRACKING_HEARTBEAT", f"{datetime.timedelta(seconds=seconds)}"
+    )
     return seconds