[telegram] Exceptions if bodies in requested updates doesn't have 'text' key

[artemiljin]

handler telegram.py, function
def _respond_commands(self, update_response):

actually some times bodies which our bot gets doesn't contain text section, so the exception is thrown in this case, which is annoying. I've added
for update in update_content["result"]:
if not update["message"].get('text'):
continue
to avoid it. Need your suggestion if it's OK.

[garrettheel]

Looks like this has already been fixed in #83. Try the 0.25.3 release

[artemiljin]

Thanks! :) Will check.