Bump webpack from 4.46.0 to 4.47.0#3

dependabot[bot] wants to merge 1 commit intostable/1.9.xcommonknowledge/wagtail-localize:stable/1.9.xfrom

dependabot/npm_and_yarn/webpack-4.47.0commonknowledge/wagtail-localize:dependabot/npm_and_yarn/webpack-4.47.0Copy head branch name to clipboard