[FIX] hr_holidays: fix undeterministic test

The test was randomly failing on nightly builds as the timeoff was
considered as started, thus preventing the user from modifying it.

closes odoo/odoo#95010

X-original-commit: 95f84086d15ed0a139e4e145dc2422a949f1ae95
Signed-off-by: Kevin Baptiste <kba@odoo.com>

addons/hr_holidays/tests/test_access_rights.py

@@ -28,8 +28,8 @@ class TestHrHolidaysAccessRightsCommon(TestHrHolidaysCommon):
             'holiday_status_id': cls.leave_type.id,
             'department_id': cls.employee_emp.department_id.id,
             'employee_id': cls.employee_emp.id,
-            'date_from': datetime.now(),
-            'date_to': datetime.now() + relativedelta(days=1),
+            'date_from': datetime.now() + relativedelta(days=30),
+            'date_to': datetime.now() + relativedelta(days=31),
             'number_of_days': 1,
         })