Update otpclient to version 3.1.6 / rev 25 via SR 1073715
https://build.opensuse.org/request/show/1073715
by user polslinux + dimstar_suse
- Update to 3.1.6:
* Correctly quit the password dialog on export. This avoid dumping
the database in plaintext format if the user presses either the
cancel or close button.