deps: limit linters version

Version lock is based on a latest version available for Python 3.6.
`<=` comparison was chosen due to possible dependencies incompatibility.
For example, using `pylint ~= 3.0.0a4` with `flake8 ~= 5.0.4` results in
conflicting dependencies:
    pylint 3.0.0a4 depends on mccabe<0.7 and >=0.6
    flake8 5.0.4 depends on mccabe<0.8.0 and >=0.7.0

Author: DifferentialOrange

requirements-test.txt

@@ -1,6 +1,6 @@
 git+https://github.com/baztian/dbapi-compliance.git@ea7cb1b4#egg=dbapi-compliance
 pyyaml==6.0
 importlib-metadata >= 1.0 ; python_version < '3.8'
-pylint
-flake8
-codespell
+pylint <= 3.0.0a4
+flake8 <= 5.0.4
+codespell <= 2.2