Update dependency flake8 to v7

This MR contains the following updates:

Package	Type	Update	Change
flake8 (changelog)	dev-dependencies	major	^6.0.0 -> ^7.0.0

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Release Notes

pycqa/flake8

v7.1.2

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v7.1.1

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v7.1.0

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v7.0.0

Compare Source

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pyproject.toml

@@ -20,7 +20,7 @@ nfcpy = "^1.0.4"
 
 [tool.poetry.dev-dependencies]
 safety = "^2.0.0"
-flake8 = "^6.0.0"
+flake8 = "^7.0.0"
 flake8-fixme = "^1.1.1"
 flake8-mypy = "^17.8.0"
 flake8-bandit = "^4.0.0"