Log Message:
py-cherrypy: updated to 18.2.0

v18.2.0
* File-based sessions no longer attempt to remove the lock files
  when releasing locks, instead deferring to the default behavior
  of zc.lockfile. Fixes :issue:`1391` and :issue:`1779`.
* :pr:`1794`: Add native support for ``308 Permanent Redirect``
  usable via ``raise cherrypy.HTTPRedirect('/new_uri', 308)``.