[aur-requests] [PRQ#15584] Merge Request for openspace-desktop-bin

The999eagle [1] filed a request to merge openspace-desktop-bin [2] into okuna-desktop-bin [3]: Openspace has been renamed again to Okuna, so I renamed the AUR package as well. [1] https://aur.archlinux.org/account/The999eagle/ [2] https://aur.archlinux.org/pkgbase/openspace-desktop-bin/ [3] https://aur.archlinux.org/pkgbase/okuna-desktop-bin/