telegram: update IP addresses used by the experiment

[bassosimone]

See ooni/probe-legacy#74

[bassosimone]

Potentially useful resource: https://www.qurium.org/alerts/telegram-latency-and-belarus/

[hellais]

A PR for this is ready for review: ooni/probe-cli#232. It turns out they only added one additional endpoint and the other ones we had in the configuration are still live.

[bassosimone]

done!