cgi as transitive dependency in python client has been deprecated

[kolipoki]

Opened based on Sándor Kiss’s request.

Client tested our python client in a clean venv with Python 3.14 and gets cgi module import error. Httpx dependency.

This could be the reason:

" https://docs.python.org/3/library/cgi.html

cgi — Common Gateway Interface support

Deprecated since version 3.11, removed in version 3.13.

This module is no longer part of the Python standard library. It was removed in Python 3.13 after being deprecated in Python 3.11. The removal was decided in PEP 594."

[martonilles]

#59 should move to newer httpx