Backport: Update toolkit's gonum to v0.15.0#9965

dmcilvaney merged 2 commits intomicrosoft:mainmicrosoft/azurelinux:mainfrom

dmcilvaney:damcilva/2.0/tools/backport_update_gonumdmcilvaney/CBL-Mariner:damcilva/2.0/tools/backport_update_gonumCopy head branch name to clipboard