Update winscope dependencies

Upgrade to webpack4, vue 2.6, and kotlin 1.5

Update all other dev dependencies to their latest versions due to
deprecation or security warnings

Bug: 185516271
Test: yarn install && yarn run dev (or yarn build) && test winscope
Change-Id: Ife8544f8da50782565f34436b0a1a284101654aa
4 files changed