chore(deps-dev): bump django from 4.2.5 to 4.2.6

[dependabot]

Bumps django from 4.2.5 to 4.2.6.

Commits

• c22017b [4.2.x] Bumped version for 4.2.6 release.
• be9c27c [4.2.x] Fixed CVE-2023-43665 -- Mitigated potential DoS in django.utils.text....
• 39fc3f4 [4.2.x] Added stub release notes and release date for 4.2.6, 4.1.12, and 3.2.22.
• dd0bf63 [4.2.x] Added warning about flatpages and untrusted users.
• fec4ed0 [4.2.x] Refs #34320 -- Skipped SchemaTests.test_rename_field_with_check_to_tr...
• a148461 [4.2.x] Fixed #34840 -- Avoided casting string base fields on PostgreSQL.
• b08f53f [4.2.x] Refs #34808 -- Doc'd that aggregation functions on empty groups can r...
• c70f08c [4.2.x] Added updating the Django release process on Trac to release steps.
• d485aa2 [4.2.x] Fixed typo in docs/howto/custom-file-storage.txt.
• ff26e6a [4.2.x] Corrected QuerySet.prefetch_related() note about GenericRelation().
• Additional commits viewable in compare view

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[github-actions]

Coverage report

The coverage rate went from 90.9% to 90.9% ⬆️
The branch rate is 85%.

None of the new lines are part of the tested code. Therefore, there is no coverage data about them.

[machikoyasuda]

This is a security release: https://www.djangoproject.com/weblog/2023/oct/04/security-releases/

CVE-2023-43665: Denial-of-service possibility in django.utils.text.Truncator

Following the fix for CVE-2019-14232, the regular expressions used in the implementation of django.utils.text.Truncator’s chars() and words() methods (with html=True) were revised and improved. However, these regular expressions still exhibited linear backtracking complexity, so when given a very long, potentially malformed HTML input, the evaluation would still be slow, leading to a potential denial of service vulnerability.

The chars() and words() methods are used to implement the truncatechars_html and truncatewords_html template filters, which were thus also vulnerable.

The input processed by Truncator, when operating in HTML mode, has been limited to the first five million characters in order to avoid potential performance and memory issues.

Thanks Wenchao Li of Alibaba Group for the report.

This issue has severity "moderate" according to the Django security policy.

[machikoyasuda]

Tested locally