Update gmic to version 3.1.5 / rev 24 via SR 999216
https://build.opensuse.org/request/show/999216
by user cgiboudeaux + dimstar_suse
- Update to 3.1.5. No changelog.
- Drop patch, merged upstream:
* gmic-qt-make-it-work-without-gmic-cpp.patch
- Update to 3.1.4. No changelog.
- Rebase krita5.patch