updated test to cover case with timestamp

Author: King Long Tse

tests/integration/test_export.py

@@ -84,7 +84,7 @@ def test_export_filtered_dates(client,
     regular_export = project.export_labels(download=True)
     assert len(regular_export) == 1
 
-    filtered_export = project.export_labels(download=True, start="2020-01-01")
+    filtered_export = project.export_labels(download=True, start="2020-01-01 00:00:00")
     assert len(filtered_export) == 1
 
     empty_export = project.export_labels(download=True,