Upgrade flake8

.gitlab-ci.yml

@@ -31,8 +31,8 @@ linters:
   before_script:
     - pip install -r requirements.txt -r requirements-linters.txt
   script:
+    - flake8 it4kt tests
     - mypy it4kt tests
-    - flake8
 
 
 test-python37:

requirements-linters.txt

-flake8~=3.9
+flake8~=5.0.4
 mypy==0.991
 types-requests
 types-pkg_resources