Update dependency flake8 to v7

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
flake8 (changelog)	^6.0.0 -> ^7.0.0

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Release Notes

pycqa/flake8 (flake8)

v7.0.0

Compare Source

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Configuration

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.85%. Comparing base (12d787d) to head (d7ab5ba).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #306   +/-   ##
========================================
  Coverage    94.85%   94.85%           
========================================
  Files           12       12           
  Lines          835      835           
  Branches       165      165           
========================================
  Hits           792      792           
  Misses          24       24           
  Partials        19       19           

Flag	Coverage Δ
unit	94.85% <ø> (ø)

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