Update nemo to version 5.6.4 / rev 51 via SR 1073642
    
    https://build.opensuse.org/request/show/1073642
    by user dirkmueller + dimstar_suse
    - update to 5.6.4:
      * nemo-view-dnd.c: Fix the check for a web link's title, and
        use the url if it's missing.
      * nemo-mime-actions.c: Prioritize an http link to open in a
        browser, regardless of the mimetype of the link's target.
      * Fix for List View thumbnail scaling at HiDPI
      * list-view: Scale the thumbnail correctly when applying
        emblems, and fix the emblem sanity checks everywhere.
      * file info: Use generic methods for attributes that aren't
        guaranteed to be supported by the filesystem.