Bump flake8 from 7.0.0 to 7.1.0 (#15417)

(cherry picked from commit dc996dd)

requirements-optional.txt

@@ -1,5 +1,5 @@
 # For running tests and checking code quality using these modules.
-flake8==7.0.0
+flake8==7.1.0
 pytest-cov==5.0.0
 redis==5.0.6
 pre-commit==3.7.1