Optional update for keepassxc

This update for keepassxc to version 2.2.0 contains several enhancements and new features:

* YubiKey 2FA integration for unlocking databases
* TOTP support
* CSV import tool
* KeePassXC CLI tool
* diceware password generator
* support for entry references
* support for Twofish encryption

Fixed bugs
bnc#1055858
keepassxc: update to version 2.2.0
Selected Binaries
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