Log Message:
py-django2: updated to 2.2.16

Django 2.2.16 fixes two security issues and two data loss bugs in 2.2.15.

CVE-2020-24583: Incorrect permissions on intermediate-level directories on \ 
Python 3.7+

On Python 3.7+, FILE_UPLOAD_DIRECTORY_PERMISSIONS mode was not applied to \ 
intermediate-level directories created in the process of uploading files and to \ 
intermediate-level collected static directories when using the collectstatic \ 
management command.

You should review and manually fix permissions on existing intermediate-level \ 
directories.

CVE-2020-24584: Permission escalation in intermediate-level directories of the \ 
file system cache on Python 3.7+

On Python 3.7+, the intermediate-level directories of the file system cache had \ 
the system’s standard umask rather than 0o077 (no group or others \ 
permissions).

Bugfixes

Fixed a data loss possibility in the select_for_update(). When using related \ 
fields pointing to a proxy model in the of argument, the corresponding model was \ 
not locked.
Fixed a data loss possibility, following a regression in Django 2.0, when \ 
copying model instances with a cached fields value.

Django 2.2.15 fixes two bugs in 2.2.14.

Bugfixes

Allowed setting the SameSite cookie flag in HttpResponse.delete_cookie().
Fixed crash when sending emails to addresses with display names longer than 75 \ 
chars on Python 3.6.11+, 3.7.8+, and 3.8.4+.