examples.dataframe.flight_delays_it_test.FlightDelaysTest.test_flight_delays is failing since upgrade to pandas 1.4.0

AssertionError: date='2012-12-23'
result DataFrame: airline departure_delay arrival_delay
0 AA 20.082559 12.825593 1 AS 5.045627 1.072243 2 B6 20.646570 16.405405 3 DL 5.225406 -3.207259 4 EV 10.019019 4.431431 5 F9 23.543478 25.173913 6 FL 4.492877 -0.800570 7 HA -1.082902 0.010363 8 MQ 9.069069 3.821321 9 OO 31.107807 31.853779 10 UA 19.127368 11.069474 11 US 3.122253 -2.304945 12 VX 62.755102 62.612245 13 WN 12.074299 6.717968 14 YV 16.155844 13.376623
Differs from Expectation: airline departure_delay arrival_delay
0 AA 20.082559 12.825593 1 AS 5.045627 1.072243 2 B6 20.646570 16.405405 3 DL 5.255992 -3.214765 4 EV 10.019019 4.431431 5 F9 23.823529 25.455882 6 FL 4.492877 -0.800570 7 HA -1.082902 0.010363 8 MQ 8.902256 3.667669 9 OO 31.148883 31.908189 10 UA 19.142555 11.071806 11 US 3.092541 -2.350829 12 VX 62.755102 62.612245 13 WN 12.074299 6.717968 14 YV 16.155844 13.376623