chore(deps): update dependency flake8 to v7

Author: mend-for-github.1485827954.workers.dev[bot]

pyproject.toml

@@ -33,7 +33,7 @@ email-validator = {version = "*", optional = true }
 coverage = {extras = ["toml"], version = "^6.2"}
 pytest = "^7.0.1"
 black = "^21.12b0"
-flake8 = "^4.0.1"
+flake8 = "^7.0.0"
 flake8-black = "^0.2.3"
 flake8-builtins = "^1.5.3"
 flake8-comprehensions = "^3.7.0"