Kobo-install CryptographyDeprecation warnings

Just a heads-up for developers. ./run.py --setup gives multiple CryptographyDeprecation warnings, 16 in all, throughout the install process. They’re all identical:

/snap/docker/2746/lib/python3.6/site-packages/paramiko/transport.py:32: CryptographyDeprecationWarning: Python 3.6 is no longer supported by the Python core team. Therefore, support for it is deprecated in cryptography. The next release of cryptography (40.0) will be the last to support Python 3.6.
from cryptography.hazmat.backends import default_backend

~/opt/kobo-install$ uname -a
Linux survey 5.15.0-69-generic #76-Ubuntu SMP Fri Mar 17 17:19:29 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux

~/opt/kobo-install$ more /etc/os-release
PRETTY_NAME=“Ubuntu 22.04.2 LTS”
VERSION=“22.04.2 LTS (Jammy Jellyfish)”

This has been submitted as bug report #224.