[Security] Bump django from 2.2.7 to 2.2.8

[dependabot-preview]

Bumps django from 2.2.7 to 2.2.8. This update includes a security fix.

Vulnerabilities fixed

Sourced from The GitHub Security Advisory Database.

Moderate severity vulnerability that affects django Django 2.1 before 2.1.15 and 2.2 before 2.2.8 allows unintended model editing. A Django model admin displaying inline related models, where the user has view-only permissions to a parent model but edit permissions to the inline model, would be presented with an editing UI, allowing POST requests, for updating the inline model. Directly editing the view-only parent model was not possible, but the parent model's save() method was called, triggering potential side effects, and causing pre and post-save signal handlers to be invoked. (To resolve this, the Django admin is adjusted to require edit permissions on the parent model in order for inline models to be editable.)

Affected versions: >= 2.2.0, < 2.2.8

Commits

• b8782c5 [2.2.x] Bumped version for 2.2.8 release.
• d6fa509 [2.2.x] Added release dates for 2.1.15, 2.2.8 and 3.0.
• 36f580a Fixed CVE-2019-19118 -- Required edit permissions on parent model for editabl...
• 70311e1 [2.2.x] Refs #30953 -- Added 2.1.15 release note for 0107e3d1058f653f66032f7f...
• 6cf3b6f [2.2.x] Fixed #30953 -- Made select_for_update() lock queryset's model when u...
• 9a17ae5 [2.2.x] Fixed #31021 -- Fixed proxy model permissions data migration crash wi...
• 019a1b9 [2.2.x] Fixed #31029 -- Used more specific links to RFCs.
• 57f5a7e [2.2.x] Refs #31029 -- Added note about :rfc: role in writing documentation d...
• 3cf70df [2.2.x] Fixed #31018 -- Removed django-nonrel in NoSQL databases FAQ.
• e82a1bc [2.2.x] Improved custom MultiWidget example in docs.
• Additional commits viewable in compare view

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[codecov-io]

Codecov Report

Merging #244 into develop will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop     #244   +/-   ##
========================================
  Coverage    90.77%   90.77%           
========================================
  Files           53       53           
  Lines         1475     1475           
========================================
  Hits          1339     1339           
  Misses         136      136

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[dependabot-preview]

Superseded by #279.