fix: catch async errors

[pekasen]

Traceback (most recent call last):
  File "~/.local/bin/tegracli", line 8, in <module>
    sys.exit(cli())
  File "~/.local/pipx/venvs/tegracli/lib/python3.9/site-packages/click/core.py", line 1130, in __call__
    return self.main(*args, **kwargs)
  File "~/.local/pipx/venvs/tegracli/lib/python3.9/site-packages/click/core.py", line 1055, in main
    rv = self.invoke(ctx)
  File "~/.local/pipx/venvs/tegracli/lib/python3.9/site-packages/click/core.py", line 1657, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "~/.local/pipx/venvs/tegracli/lib/python3.9/site-packages/click/core.py", line 1657, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "~/.local/pipx/venvs/tegracli/lib/python3.9/site-packages/click/core.py", line 1404, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "~/.local/pipx/venvs/tegracli/lib/python3.9/site-packages/click/core.py", line 760, in invoke
    return __callback(*args, **kwargs)
  File "~/.local/pipx/venvs/tegracli/lib/python3.9/site-packages/click/decorators.py", line 26, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "~/.local/pipx/venvs/tegracli/lib/python3.9/site-packages/tegracli/main.py", line 224, in run
    run_group(ctx.obj["client"], groups)
  File "~/.local/pipx/venvs/tegracli/lib/python3.9/site-packages/tegracli/main.py", line 316, in run_group
    client.loop.run_until_complete(
  File "~/.pyenv/versions/3.9.12/lib/python3.9/asyncio/base_events.py", line 647, in run_until_complete
    return future.result()
  File "~/.local/pipx/venvs/tegracli/lib/python3.9/site-packages/tegracli/dispatch.py", line 30, in dispatch_iter_messages
    async for message in client.iter_messages(wait_time=10, **params):
  File "~/.local/pipx/venvs/tegracli/lib/python3.9/site-packages/telethon/requestiter.py", line 74, in __anext__
    if await self._load_next_chunk():
  File "~/.local/pipx/venvs/tegracli/lib/python3.9/site-packages/telethon/client/messages.py", line 184, in _load_next_chunk
    r = await self.client(self.request)
  File "~/.local/pipx/venvs/tegracli/lib/python3.9/site-packages/telethon/client/users.py", line 30, in __call__
    return await self._call(self._sender, request, ordered=ordered)
  File "~/.local/pipx/venvs/tegracli/lib/python3.9/site-packages/telethon/client/users.py", line 84, in _call
    result = await future
telethon.errors.rpcerrorlist.UserDeactivatedError: The user has been deleted/deactivated (caused by GetHistoryRequest)

[pekasen]

Similar behavior as here:

Traceback (most recent call last):
  File "~/repos/tegracli/.venv/bin/tegracli", line 6, in <module>
    sys.exit(cli())
  File "~/repos/tegracli/.venv/lib/python3.9/site-packages/click/core.py", line 1130, in __call__
    return self.main(*args, **kwargs)
  File "~/repos/tegracli/.venv/lib/python3.9/site-packages/click/core.py", line 1055, in main
    rv = self.invoke(ctx)
  File "~/repos/tegracli/.venv/lib/python3.9/site-packages/click/core.py", line 1657, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "~/repos/tegracli/.venv/lib/python3.9/site-packages/click/core.py", line 1404, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "~/repos/tegracli/.venv/lib/python3.9/site-packages/click/core.py", line 760, in invoke
    return __callback(*args, **kwargs)
  File "~/repos/tegracli/.venv/lib/python3.9/site-packages/click/decorators.py", line 26, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "~/repos/tegracli/tegracli/main.py", line 104, in hydrate
    client.loop.run_until_complete(
  File "~/.pyenv/versions/3.9.0/lib/python3.9/asyncio/base_events.py", line 642, in run_until_complete
    return future.result()
  File "~/repos/tegracli/tegracli/dispatch.py", line 73, in dispatch_hydrate
    await dispatch_iter_messages(
  File "~/repos/tegracli/tegracli/dispatch.py", line 32, in dispatch_iter_messages
    async for message in client.iter_messages(wait_time=10, **params):
  File "~/repos/tegracli/.venv/lib/python3.9/site-packages/telethon/requestiter.py", line 74, in __anext__
    if await self._load_next_chunk():
  File "~/repos/tegracli/.venv/lib/python3.9/site-packages/telethon/client/messages.py", line 289, in _load_next_chunk
    r = await self.client(
  File "~/repos/tegracli/.venv/lib/python3.9/site-packages/telethon/client/users.py", line 30, in __call__
    return await self._call(self._sender, request, ordered=ordered)
  File "~/repos/tegracli/.venv/lib/python3.9/site-packages/telethon/client/users.py", line 84, in _call
    result = await future
telethon.errors.rpcerrorlist.ChannelPrivateError: The channel specified is private and you lack permission to access it. Another reason may be that you were banned from it (caused by GetMessagesRequest)