See 782555a674de2ab6f1760f13c4a1b17400f64533

Attempt at backporting regexp fixes

Release notes for 1.6.9

And remove soon to be deprecated fedora 35

This is the python version in fedora 37

The older version doesn't support Python 3.11

This is first upstream release that advertises Python 3.11 support

Cannot set environment variables to None when running tests
in subprocesses.

We cannot use unittest.mock() when running tests in subprocesses.

We cannot monkeypatch os.uname() in a subprocess.

Instead of manually asserting Result members, this is required because
some of the Result attributes are being removed.

We can no longer assert that the client has exited without throwing
an exception.

When running tests in subprocesses the exit code is unsigned,
so check failures with != 0 instead of explicitly checking for -1.

This is based off of work started by Seppo Yli-Olli

We now run tests in subprocesses instead of using multiprocessing,
this patch adds serialization of machine readable error codes so that
tests can work.

We no longer provide the raw exceptions in the test Result
object returned by Cli.run(), which limits the tests in some ways.

Add support for python 3.11