USN-6673-2: python-cryptography vulnerability

USN-6673-1 provided a security update for python-cryptography.
This update provides the corresponding update for Ubuntu 16.04 LTS.

Original advisory details:

Hubert Kario discovered that python-cryptography incorrectly handled
errors returned by the OpenSSL API when processing incorrect padding in
RSA PKCS#1 v1.5. A remote attacker could possibly use this issue to expose
confidential or sensitive information. (CVE-2023-50782)

advisory api attacker confidential cryptography cve errors expose information issue lts openssl padding pkcs python rsa security security update sensitive sensitive information ubuntu update usn vulnerability