deskutils/kdeconnect-kde: update to 1.3.4

Changes since 1.3.3 are:

• Always play when call ended
• [cli] Show all reachable devices
• [sftp] Also report desktop side errors via KIO
• [sftp] Get device ID from URL
• Retry the network packet if it failed to unserialize
• Fix sending keys via CLI
• [kio] Fix file browsing with non-KIO file managers