python-django vulnerabilities

USN-5269-1 fixed several vulnerabilities in Django. This update provides
the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory details:

Keryn Knight discovered that Django incorrectly handled certain template
tags. A remote attacker could possibly use this issue to perform a
cross-site scripting attack. (CVE-2022-22818)

Alan Ryan discovered that Django incorrectly handled file uploads. A remote
attacker could possibly use this issue to cause Django to hang, resulting
in a denial of service. (CVE-2022-23833)