Recommended update for gdm

This update for gdm fixes the following issues:

- Fix for the issue with user switch with enabled autologin. (bsc#1179968, bsc#1174533)

This update was imported from the SUSE:SLE-15-SP2:Update update project.

Fixed bugs
bnc#1179968
[HUAWEI NOT FOR THE USA]The desktop display abnormal when loging into the OS - Intelligent Computing
bnc#1174533
Switch user and logout are broken on user with autologin enabled
Selected Binaries
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