Bug#1040853: python-lockfile autopkg test fail with setuptools 68

[Dan Bungert]

Just wanted to quickly confirm that the same fix proposed at:
https://bugs.debian.org/cgi-bin/bugreport.cgi?att=1;bug=1040854;filename=python-tinyrpc_0.6-4ubuntu1.debdiff;msg=10

works well for python-lockfile.

-Dan