Update pinned package versions in test_requirements.txt

Author: JoshData

test_requirements.txt

@@ -1,26 +1,27 @@
 # This file was generated by running
+#   sudo docker run --rm -it --network=host python:3.6.15-slim /bin/bash
 #   pip install dnspython idna # from setup.cfg
 #   pip install pytest pytest-cov coverage flake8
 #   pip freeze
 # in a virtualenv with Python 3.6. (Some packages' latest versions
 # are not compatible with Python 3.6, so we must pin versions for
 # repeatable testing in earlier versions of Python.)
-attrs==21.4.0
+attrs==22.2.0
 coverage==6.2
 dnspython==2.2.1
-flake8==4.0.1
-idna==3.3
+flake8==5.0.4
+idna==3.4
 importlib-metadata==4.2.0
 iniconfig==1.1.1
-mccabe==0.6.1
+mccabe==0.7.0
 packaging==21.3
 pluggy==1.0.0
 py==1.11.0
-pycodestyle==2.8.0
-pyflakes==2.4.0
-pyparsing==3.0.7
+pycodestyle==2.9.1
+pyflakes==2.5.0
+pyparsing==3.0.9
 pytest==7.0.1
-pytest-cov==3.0.0
+pytest-cov==4.0.0
 tomli==1.2.3
 typing_extensions==4.1.1
 zipp==3.6.0