Update_KDE_Leap

# Add this repositories:

sudo zypper ar -f http://download.opensuse.org/repositories/KDE:/Applications/KDE_Frameworks5_openSUSE_Leap_15.1/ KDE-Applications 
 
sudo zypper ar -f http://download.opensuse.org/repositories/KDE:/Extra/openSUSE_Leap_15.1/ KDE-Extra 
 
sudo zypper ar -f http://download.opensuse.org/repositories/KDE:/Frameworks5/openSUSE_Leap_15.1/ KF5 
 
sudo zypper ar -f http://download.opensuse.org/repositories/KDE:/Qt5/openSUSE_Leap_15.1/ Qt5

# Refresh repositories

sudo zypper -n --gpg-auto-import-keys ref KDE-Applications KDE-Extra KF5 Qt5

# And dist-upgrade

sudo zypper dup --from KDE-Applications --from KDE-Extra --from KF5 --from Qt5 --allow-vendor-change