add to the FAQ something about future timezone changes

[edgarcosta]

Something along the lines:

Our talks are internally stored with UTC offsets and aren't aware of the timezone. Thus, if a timezone changes, for example, no longer observing DST, those changes will not be reflected in the already scheduled talks. We will do our best to limit this kind of disruption by keeping up to date with IANA timezone database but such changes always take time to propagate.