Update python-validators to rev 13 via SR 827972
https://build.opensuse.org/request/show/827972
by user mia + dimstar_suse
- Update to 0.18.0:
* Added bitcoin address validator
Changes from 0.17.0 to 0.17.1:
* Fixed python_requires using twine
Changes from 0.16.0 to 0.17.0:
* Fix URL validator ip_last_octet regex