CI: (deps): Bump the flake8 group in /ci-dev with 3 updates

[dependabot]

Bumps the flake8 group in /ci-dev with 3 updates: flake8, pycodestyle and pyflakes.

Updates flake8 from 7.3.0 to 7.4.1

Commits

• 7eccf20 Release 7.4.1
• fe7311d Merge pull request #2057 from PyCQA/fix-pyflakes-4
• 819d5e6 fix pyflakes 4.x --builtins integration
• 3140509 Release 7.4.0
• e12e231 Merge pull request #2055 from PyCQA/add-315-ci
• f022536 add python 3.15 to CI
• 07eb8ae Merge pull request #2054 from PyCQA/latest-pyflakes
• a9e6dc2 update to latest pyflakes
• 2436eab Merge pull request #2053 from PyCQA/latest-pycodestyle
• b44ddd4 update to latest pycodestyle
• Additional commits viewable in compare view

Updates pycodestyle from 2.14.0 to 2.15.0

Changelog

Sourced from pycodestyle's changelog.

2.15.0 (2026-09-22)

Changes:

• Improve performance of module_imports_on_top_of_file. PR #1292.
• Improve performance of python_3000_invalid_escape_sequence. PR #1292.
• Improve performacne of missing_whitespace_after_keyword. PR #1291.
• Drop EOL python 3.9. PR #1300.
• Add support for python 3.15. PR #1322.
• Fix loading unrelated configuration due to commonprefix. PR #1323.

Commits

• 9647851 Release 2.15.0
• d6c3854 Merge pull request #1324 from PyCQA/coverage-comment-missing
• 5cacafb add missing coverage comment
• b12ad5e Merge pull request #1323 from PyCQA/commonpath
• 875e20f prevent reading unrelated configuration due to commonprefix
• 16f2127 Merge pull request #1322 from PyCQA/py315-syntax
• 7c9a192 add support for python 3.15 syntax
• c6ccf5d [pre-commit.ci] pre-commit autoupdate
• 8b53059 Merge pull request #1308 from PyCQA/pre-commit-ci-update-config
• fb966ce [pre-commit.ci] pre-commit autoupdate
• Additional commits viewable in compare view

Updates pyflakes from 3.4.0 to 4.0.0

Changelog

Sourced from pyflakes's changelog.

4.0.0 (2026-09-22)

• Add support for python 3.15
• Drop support for EOL python 3.9
• Add new errors for lazy imports:
  • lazy import is eagerly used at module scope
  • lazy from ... import * is invalid syntax
  • lazy from __future__ import ... is invalid syntax
  • lazy import must be at module scope
• Improve typing specialization:
  • Handle cast(...) with named arguments
  • Fix duplicate errors in first argument of cast(...)
  • Handle TypeVar(... default='...')
  • Fix missing error for first argument of TypeVar(...) call
  • Update handling of NamedTuple(...) for python 3.15 changes
  • Update handling of TypedDict(...) for python 3.13 changes
  • Add handling of assert_type(...)
  • Add handling of NewType(...)
  • Add handling of TypeVarTuple(...)
  • Add handling of ParamSpec(...)
• Fix assignment expressions in dictionary literals
• Remove file_tokens parameter to Checker. Unused since 3.0.0
• Fix false-negative for deleting special variables such as del __tracebackhide__
• Add support for python3t shebangs
• Remove support for obsolete python3m and pythonu shebangs

Commits

• bda5e1d Release 4.0.0
• f6e565c remove redundant tests coverage check (#901)
• dbf9fcc enforce 100% test coverage (#900)
• c9619fc add test to ensure iterSourceCode does not process dead links (#899)
• a6e8a11 detect python3t and remove detection for python3m and pythonu (#897)
• fa7a02c add test for check(...) of non-string (#898)
• 2a8910c add test for submodule import redefining a name (#896)
• 5ef97ef improve coverage for all handling (#895)
• 66f1758 add test for call of attribute of undefined name (#894)
• dae13ed rework and test custom builtins (#893)
• Additional commits viewable in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot show <dependency name> ignore conditions will show all of the ignore conditions of the specified dependency
• @dependabot ignore <dependency name> major version will close this group update PR and stop Dependabot creating any more for the specific dependency's major version (unless you unignore this specific dependency's major version or upgrade to it yourself)
• @dependabot ignore <dependency name> minor version will close this group update PR and stop Dependabot creating any more for the specific dependency's minor version (unless you unignore this specific dependency's minor version or upgrade to it yourself)
• @dependabot ignore <dependency name> will close this group update PR and stop Dependabot creating any more for the specific dependency (unless you unignore this specific dependency or upgrade to it yourself)
• @dependabot unignore <dependency name> will remove all of the ignore conditions of the specified dependency
• @dependabot unignore <dependency name> <ignore condition> will remove the ignore condition of the specified dependency and ignore conditions