Update timezone for CAON (Canada/Ontario)

Changing the timezone for CAON (Canada/Ontario) to America/Toronto. The previous timezone (America/Rainy_River) corresponds to Central Time, when in reality most of Ontario is in Eastern Time. This is still not 100% accurate, since Ontario crosses 2 timezones, but it is probably 95% accurate based on population.

If you look at the maxmind/geoip-api-c repo, you will see the same change has been made.