[Snyk] Upgrade webpack-dev-server from 3.1.14 to 3.9.0#4

Open

snyk-bot wants to merge 1 commit intomasterfrom snyk-upgrade-f5ae03745e1e7b731a70dab0de42243e

+1-1

Commits on Nov 1, 2019

chore: upgrade webpack-dev-server from 3.1.14 to 3.9.0
snyk-bot
committed