Either the documentation on
https://en.opensuse.org/openSUSE:Package_dependencies#Merging_a_package is
wrong, or the behaviour in zypper is broken.

I specified exctly what is documented on this page, i.e.

Name: nvidia-gfxG04-kmp-default
Version: 361.28
Provides: nvidia-uvm-gfxG04-kmp-default = 352.79
Obsoletes:nvidia-uvm-gfxG04-kmp-default <= 352.79

nvidia-gfxG04-kmp-default 352.79 and nvidia-uvm-gfxG04-kmp-default 352.79 are
installed. When trying to update to nvidia-gfxG04-kmp-default 361.28 via zypper
nvidia-uvm-gfxG04-kmp-default complains that nvidia-gfxG04-kmp-default 352.79
is needed. Update works fine when using

Provides: nvidia-uvm-gfxG04-kmp-default
Obsoletes:nvidia-uvm-gfxG04-kmp-default

instead, i.e. when omitting the version numbers.