build(deps): bump pyflakes from 3.3.2 to 3.4.0

Bumps [pyflakes](https://github.com/PyCQA/pyflakes) from 3.3.2 to 3.4.0.
- [Changelog](https://github.com/PyCQA/pyflakes/blob/main/NEWS.rst)
- [Commits](PyCQA/pyflakes@3.3.2...3.4.0)

---
updated-dependencies:
- dependency-name: pyflakes
  dependency-version: 3.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

test_reqs.txt

@@ -3,6 +3,6 @@ Markdown==3.8.2
 coverage==7.9.2
 flake8==7.2.0
 pep8==1.7.1
-pyflakes==3.3.2
+pyflakes==3.4.0
 django-markwhat==2025.5.31
 coveralls==4.0.1