This update for gnome-shell and gsettings-desktop-schemas fixes the following issues:

gnome-shell:
- Fixes an issue where gnome-shell crashed and prevented booting into
a GNOME environment (bsc#1120178)
- Fixes a memory leak bug (bsc#1093541)

gsettings-desktop-schemas:
- Fixes an issue where gsettings-desktop-schemas crashed in combination with
gnome-shell (bsc#1120178)

This update was imported from the SUSE:SLE-15:Update update project.