message: test: freeze time for dashboard export test
diff: @@ -1425,6 +1425,7 @@ class TestDashboardApi(SupersetTestCase, ApiOwnersTestCaseMixin, InsertChartMixi
  "load_world_bank_dashboard_with_slices",
  "load_birth_names_dashboard_with_slices",
  )
  + @freeze_time("2022-01-01")
  def test_export(self):
  """
  Dashboard API: Test dashboard export
  