oxygen-icons: update to 5.93.0

5.83.0
high def new version printer
more versions of the printer icon size 16x16
more size versions of preferences-kde-connect

5.84.0
Ethernet port icon
2 more "new" system settings icons
thunderbolt preferences icon
search icon updated
more improvements to last day icon
more size versions of new screen
more work on sytemsetings icons
improved consistency and contrast

5.85.0
new color version for notification icon
improved icons from yesterday+ missing resolutions
preferences-desktop-notification-bell icon
kdf icon

5.86.0
Import icons from KAlarm

5.91.0
Check executables exist in PATH before passing them to QProcess

(markd)