[fix] pylint issue in py3.10

searxng_extra/update/update_firefox_version.py:16:0: W0402:
Uses of a deprecated module 'distutils.version' (deprecated-module)

[1] https://github.com/searxng/searxng/pull/1007



Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>