Replace spread (...) with collection merge to stay compatible with php 7.2
Replace spread (...) with collection merge
to stay compatible with php 7.2

SlovakNationalGallery/web-umenia-2,SlovakNationalGallery/web-umenia-2,SlovakNationalGallery/web-umenia-2,SlovakNationalGallery/web-umenia-2