security/keepassxc: update to 2.2.0

• Add YUBIKEY option because keepassxc has added support for YubiKey 2FA
• Update pkg-descr to reflect the new added changes

Changelog: https://github.com/keepassxreboot/keepassxc/blob/develop/CHANGELOG

PR: 220585
Submitted by: Andrew Romanenko <melanhit@gmail.com> (maintainer)
MFH: 2017Q3