Bump pyflakes from 2.4.0 to 2.5.0 in /tools

[dependabot[bot]]

Bumps pyflakes from 2.4.0 to 2.5.0.

Changelog

Sourced from pyflakes's changelog.

2.5.0 (2022-07-30)

• Drop support for EOL python 2.7 / 3.4 / 3.5
• Ignore __all__ when not directly assigned
• Handle TypeAlias annotations as aliases (PEP 613)
• Assignment expressions (:=) target outer scope in comprehensions
• Add support for new python 3.11 syntax
• Unify output so it is always filename:lineno:col: message
• Properly report SyntaxError from stdin in python < 3.9
• Fix offsets of SyntaxErrors in pypy

Commits

• 2a6e36b Release 2.5.0 (#720)
• a153aee remove special handling of pypy offsets since modern pypy gets it right (#717)
• d875b02 fix syntax error reporting from stdin (#357) (#716)
• 44ef321 Fix pylint URL in README (#714)
• 2246217 burn the bridges with python 2.x (#707)
• becbab6 upgrade flake8 to 4.0.1 (#706)
• f736615 remove backported unittest methods (#705)
• 5959216 remove checking of node.docstring (#704)
• 405a090 simplify PYPY check (#703)
• 30ec858 remove unused WIN (#702)
• Additional commits viewable in compare view

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