Bump webpack-dev-server and @angular-devkit/build-angular in /flink-runtime-web/web-dashboard#3

dependabot[bot] wants to merge 1 commit intomasterappfolio/flink:masterfrom

dependabot/npm_and_yarn/flink-runtime-web/web-dashboard/multi-5c8528cdccappfolio/flink:dependabot/npm_and_yarn/flink-runtime-web/web-dashboard/multi-5c8528cdccCopy head branch name to clipboard