build(deps): update pyflakes requirement from >=2.5.0 to >=3.4.0 in /requirements

[dependabot]

Updates the requirements on pyflakes to permit the latest version.

Changelog

Sourced from pyflakes's changelog.

3.4.0 (2025-06-20)

• Add support for python 3.14
• Add "t-string is missing placeholders" error
• Fix annotation erroneously causing a name to be defined with from __future__ import annotations
• Add support for always-deferred annotations (PEP 749)

3.3.2 (2025-03-31)

• Fix crash with global / nonlocal in class bodies (regressed in 3.3.0)

3.3.1 (2025-03-30)

• Allow assignment expressions to redefine annotations (regressed in 3.3.0)

3.3.0 (2025-03-29)

• Add __debuggerskip__ as a special local
• Allow assignment expressions to redefine outer names
• Drop support for EOL python 3.8
• Add new error for unused global / nonlocal names

3.2.0 (2024-01-04)

• Add support for *T (TypeVarTuple) and **P (ParamSpec) in PEP 695 annotations.

3.1.0 (2023-07-29)

• Drop support for EOL python 3.6 / 3.7
• Remove ContinueInFinally check (only relevant in python < 3.8)
• Fix forward annotations inside a nested scope
• Produce an error when a definition shadows an unused variable
• Fix accessed global annotation being redefined in a local scope
• Allow redefinition of functions across match arms
• Fix potential None for lineno during tokenization errors
• Add support for PEP 695 and python 3.12

3.0.1 (2022-11-24)

• Fix crash on augmented assign to print builtin

3.0.0 (2022-11-23)

• Detect undefined name in variable defined by an annotated assignment
• Add a new error for names which are annotated but unused
• Remove handling of python 2.x # type: comments. Use annotations instead

2.5.0 (2022-07-30)

... (truncated)

Commits

• 59ec459 Release 3.4.0
• e5d4ba1 updates for python 3.14 (#842)
• 78ee531 Release 3.3.2
• 9228d60 global / nonlocal can also appear in class bodies (#836)
• 2441e9c Release 3.3.1
• 87051d2 Allow an assignment expression to redefine an annotation (#831)
• 433dfd0 Release 3.3.0
• bb68069 update python version in README (#827)
• cadcd60 add warning for unused global / nonlocal names (#825)
• 5f1f434 drop 3.8, add 3.13 (#826)
• Additional commits viewable in compare view

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