fix CI python interpreter

Author: KotlinIsland

tox.ini

@@ -47,19 +47,16 @@ parallel_show_output = True
 
 [testenv:lint]
 description = check the code style
-basepython = python3.10
 commands = flake8 {posargs}
 
 [testenv:type]
 description = type check ourselves
-basepython = python3.10
 commands =
     python -m mypy --config-file mypy_self_check.ini -p mypy -p mypyc
     python -m mypy --config-file mypy_self_check.ini misc/proper_plugin.py
 
 [testenv:docs]
 description = invoke sphinx-build to build the HTML docs
-basepython = python3.10
 deps = -rdocs/requirements-docs.txt
 commands =
     sphinx-build -d "{toxworkdir}/docs_doctree" docs/source "{toxworkdir}/docs_out" --color -W -bhtml {posargs}