Fix Missing pysocks Dependency

[trustsafe]

When starting toot tui with HTTPS_PROXY set to a socks5h uri, an exception is thrown.

execute:
HTTPS_PROXY="socks5h://localhost:9050" toot tui

result:

  File "/home/account/.local/venv/test/lib/python3.11/site-packages/requests/adapters.py", line 483, in get_connection_with_tls_context
    proxy_manager = self.proxy_manager_for(proxy)
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/account/.local/venv/test/lib/python3.11/site-packages/requests/adapters.py", line 282, in proxy_manager_for
    manager = self.proxy_manager[proxy] = SOCKSProxyManager(
                                          ^^^^^^^^^^^^^^^^^^
  File "/home/account/.local/venv/test/lib/python3.11/site-packages/requests/adapters.py", line 64, in SOCKSProxyManager
    raise InvalidSchema("Missing dependencies for SOCKS support.")
requests.exceptions.InvalidSchema: Missing dependencies for SOCKS support.

requests needs the pysocks library to function in this case. This PR adds the dependency. This shouldn't be a big issue downstream, as pysocks is already commonly packaged in Linux distributions.