Bump flake8 from 6.1.0 to 7.0.0 in /requirements/dev

[dependabot[bot]]

Bumps flake8 from 6.1.0 to 7.0.0.

Commits

• 88a4f9b Release 7.0.0
• 6f3a60d Merge pull request #1906 from PyCQA/upgrade-pyflakes
• cde8570 upgrade pyflakes to 3.2.x
• 2ab9d76 Merge pull request #1903 from PyCQA/pre-commit-ci-update-config
• e27611f [pre-commit.ci] pre-commit autoupdate
• 9d20be1 Merge pull request #1902 from PyCQA/pre-commit-ci-update-config
• 06c1503 [pre-commit.ci] auto fixes from pre-commit.com hooks
• b67ce03 Fix bugbear lints
• c8801c1 [pre-commit.ci] pre-commit autoupdate
• 045f297 Merge pull request #1893 from PyCQA/pre-commit-ci-update-config
• Additional commits viewable in compare view

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