Revert "Bump mypy version."

This reverts commit 87f4c11.

Author: domdfcoding

repo_helper.yml

@@ -13,7 +13,7 @@ use_flit: true
 min_coverage: 90
 docs_fail_on_warning: true
 tox_testenv_extras: all
-mypy_version: "0.941"
+mypy_version: "0.931"
 
 conda_extras:
  - none

tests/requirements.txt

@@ -6,7 +6,7 @@ coverage-pyver-pragma>=0.2.1
 domdf-python-tools[testing]>=2.0.1
 importlib-metadata>=3.6.0
 iniconfig!=1.1.0,>=1.0.1
-mypy==0.941; platform_python_implementation == "CPython"
+mypy==0.931; platform_python_implementation == "CPython"
 pytest>=6.0.0
 pytest-cov>=2.8.1
 pytest-mypy-plugins>=1.9.1; platform_python_implementation == "CPython"

tox.ini

@@ -101,7 +101,7 @@ ignore_errors = True
 changedir = {toxinidir}
 extras = all
 deps =
-    mypy==0.941
+    mypy==0.931
     -r{toxinidir}/tests/requirements.txt
     -r{toxinidir}/stubs.txt
 commands = mypy consolekit tests {posargs}