Fix getting the versions of each package during dependency graph resolution.
Fix getting the versions of each package during dependency graph resolution.

nazriel/dub,Abscissa/dub-data-mod,dreamsxin/dub,grogancolin/dub,rjframe/dub,gedaiu/dub,jelmansouri/dub,jeanbaptistelab/dub,Abscissa/dub,Flamaros/dub,schuetzm/dub,p0nce/dub,D-Programming-Language/dub,xentec/dub,y12uc231/dub,Geod24/dub,alexeibs/dub