Stay on pylint 2.x.x for tests

[klevvit]

ISSUE TYPE

• Bug fix

RUNTIME ENVIRONMENT

• Operating system and version: macOS Ventura 13.6 (22G120)
• Terminal emulator and version: xterm-kitty, kitty 0.30.1
• Python version: 3.8.17 [Clang 15.0.0 (clang-1500.0.40.1)], freshly installed
• Ranger version/commit: ranger-master
• Locale: en_US.UTF-8

CHECKLIST

• The CONTRIBUTING document has been read [REQUIRED]
• All changes follow the code style [REQUIRED]
• All new and existing tests pass [REQUIRED]
• Changes require config files to be updated
  • Config files have been updated
• Changes require documentation to be updated
  • Documentation has been updated
• Changes require tests to be updated
  • Tests have been updated

DESCRIPTION

Set pylint version for automatic tests as 2.17.7, the last 2.x.x version.

MOTIVATION AND CONTEXT

pylint 3.x.x brings significant changes, so tests for new PRs may fail or even crash on current code. One of the cases is what happened in #2911 with pylint 3.0.1:

File "ranger/tests/pylint/python3.py", line 184, in Python3Checker
    __implements__ = interfaces.IAstroidChecker
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: module 'pylint.interfaces' has no attribute 'IAstroidChecker'
make: *** [test_pylint] Error 1

TESTING

My actions to check if the changes work fine:

1. install & build python 3.8.17
2. create file ~/tmp/reqs.txt with updated requirements.txt content
3. run pip install -r ~/tmp/reqs.txt
4. run make test

All tests have passed successfully.

IMAGES / VIDEOS