Update yargs (fixes #2511)
Update yargs (fixes #2511)

NekR/webpack,halfzebra/webpack,SimenB/webpack,rlugojr/webpack,sdawson/webpack,ts-webpack/webpack,jamestautges/webpack,webpack/webpack,pugnascotia/webpack,nkzawa/webpack,NekR/webpack,cesarandreu/webpack,cesarandreu/webpack,SimenB/webpack,pugnascotia/webpack,nkzawa/webpack,g0ddish/webpack,SimenB/webpack,webpack/webpack,jamestautges/webpack,jescalan/webpack,pugnascotia/webpack,halfzebra/webpack,sdawson/webpack,SimenB/webpack,ts-webpack/webpack,jescalan/webpack,jescalan/webpack,g0ddish/webpack,rlugojr/webpack,ts-webpack/webpack,webpack/webpack,webpack/webpack,rlugojr/webpack,nkzawa/webpack,g0ddish/webpack,cesarandreu/webpack,ts-webpack/webpack,halfzebra/webpack,EliteScientist/webpack,EliteScientist/webpack