Update dependency flake8 to v7

This MR contains the following updates:

Package	Change	Age	Confidence
flake8 (changelog)	^5.0.0 -> ^7.0.0

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Release Notes

pycqa/flake8 (flake8)

v7.3.0

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v7.2.0

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v7.1.2

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v7.1.1

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v7.1.0

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v7.0.0

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v6.1.0

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v6.0.0

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pyproject.toml

@@ -16,7 +16,7 @@ dynaconf = "^3.1.4"
 sphinx = "^7.0"
 sphinx-autodoc-typehints = "^1.23"
 pytest = "^7.4"
-flake8 = "^5.0.0"
+flake8 = "^7.0.0"
 flake8-fixme = "^1.1.1"
 flake8-bandit = "^4.1.1"
 flake8-builtins = "^2.1.0"