Update dependency flake8 to v7.1.2

Author: renovate[bot]

requirements.txt

@@ -4,7 +4,7 @@ autopep8==2.3.2
 coverage==7.6.12
 dill==0.3.9
 exceptiongroup==1.2.2
-flake8==7.1.1
+flake8==7.1.2
 iniconfig==2.0.0
 isort==6.0.0
 lazy-object-proxy==1.10.0