Bump flake8 from 3.9.2 to 4.0.1 in /backend

[dependabot]

Bumps flake8 from 3.9.2 to 4.0.1.

Commits

• 82b698e Release 4.0.1
• 0fac346 Merge pull request #1410 from PyCQA/parallel-syntax-error
• aa54693 fix parallel execution collecting a SyntaxError
• d31c535 Release 4.0.0
• afd2399 Merge pull request #1407 from asottile/setup-cfg-fmt
• 960cf8c rerun setup-cfg-fmt (and restore comments)
• d7baba5 Merge pull request #1406 from asottile/update-versions
• d79021a update dependency versions
• 283f0c8 Merge pull request #1404 from PyCQA/drop-xdg-config
• 807904a Drop support for Home and XDG config files
• Additional commits viewable in compare view

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[codecov]

Codecov Report

Merging #2440 (ad578fc) into main (21166a1) will decrease coverage by 2.64%.
The diff coverage is 94.47%.

❗ Current head ad578fc differs from pull request most recent head 126be3b. Consider uploading reports for the commit 126be3b to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2440      +/-   ##
==========================================
- Coverage   92.69%   90.05%   -2.64%     
==========================================
  Files         116      165      +49     
  Lines        2574     5029    +2455     
  Branches      247      521     +274     
==========================================
+ Hits         2386     4529    +2143     
- Misses        174      446     +272     
- Partials       14       54      +40     

[dependabot]

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version. You can also ignore all major, minor, or patch releases for a dependency by adding an ignore condition with the desired update_types to your config file.

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