[16.0] Flappy test in by stock_card_report

[simahawk]

Looks like this test fails randomly.

2024-09-24 12:17:54,125 302 ERROR odoo odoo.addons.stock_card_report.tests.test_stock_card_report: FAIL: TestStockCardReport.test_reports
Traceback (most recent call last):
  File "/__w/stock-logistics-reporting/stock-logistics-reporting/stock_card_report/tests/test_stock_card_report.py", line 233, in test_reports
    self.assertEqual(res.date, picking_date_user_tz)
AssertionError: datetime.datetime(2024, 9, 24, 14, 17, 54) != datetime.datetime(2024, 9, 24, 14, 17, 53)

See https://github.com/OCA/stock-logistics-reporting/actions/runs/11013550489/job/30582155710#step:8:313

[rousseldenis]

@Saran440 I think tests that compare dates should use freezegun. Could you check ?

[Saran440]

@simahawk @rousseldenis I fix it in #343
Could you recheck, please?