DeprecationWarning on the pipes module

[Douglas Raillard]

Devlib uses from pipes import quote in a number of places. Python 3.11 deprecated the pipes modules, and the quote() function can be imported from shlex module since Python 3.3 (it was probably imported from pipes to be compatible with Python 2)

[Marc Bonnici]

Thanks for raising this, we have merged #610 to address the issue.