Updated hourly temperatures for Geneva

I noticed that the Geneva_hourly_temperatures_celsius_per_hour temperature values were not completely equal to the ones extracted from the global_weather_set.json file (they are pretty much similar, but not exactly the same). The new values are the ones extracted from the JSON regarding the weather station:

067000-99999 GENEVA COINTRIN                 46.238    6.109   430.1 1935-01-01 2020-02-06

The old values were made by hand, and the new ones from the JSON are better/more correct - https://gitlab.cern.ch/cara/cara/-/issues/15.