Routing open-hours tests are failing in different timezones

[biodranik]

TZ='America/Argentina/Buenos_Aires' ../omim-build-debug/routing_tests works, while
TZ='Europe/Paris' ../omim-build-debug/routing_tests fails:

Running opening_hours_serdes_tests.cpp::OHSerDesTestFixture_OpeningHoursSerDes_Weekday_Usage_2
FAILED
routing_tests/opening_hours_serdes_tests.cpp:749 TEST(oh.IsOpen(GetUnixtimeByDate(2023, Month::Apr, Weekday::Saturday, 13 , 30 ))) 

Running opening_hours_serdes_tests.cpp::OHSerDesTestFixture_OpeningHoursSerDes_MonthHours_Usage
FAILED
routing_tests/opening_hours_serdes_tests.cpp:822 TEST(oh.IsClosed(GetUnixtimeByDate(2020, Month::May, 6, 01 , 00 ))) 

Running road_access_test.cpp::RoadAccess_WayBlockedWhenStartButOpenWhenReach
FAILED
routing_tests/index_graph_tools.cpp:608 TEST(base::AlmostEqualAbs(pathWeight, expectedWeight, kEpsilon)) 10804 12802 [5: (0, 1) (1, 2) (2, 3) (3, 4) (4, 5) ]

Opening hours/times in OpenStreetMap are specified in the local time zone. Tests (and production code!) should be robust to work properly with any local timezone specified.