Update pyfakefs to 4.5

This is required to allow running tests on 3.10.

Author: jchristgit

poetry.lock

@@ -37,7 +37,7 @@ flake8-todo = "~=0.7"
 mccabe = "~=0.6.1"
 pep8-naming = "~=0.9"
 pre-commit = "~=2.1"
-pyfakefs = "~=4.4.0"
+pyfakefs = "~=4.5"
 coveralls = "~=2.1"
 taskipy = "~=1.7.0"
 python-dotenv = "~=0.17.1"