Bump json5, webpack and @angular-devkit/build-angular in /frontend#14

dependabot[bot] wants to merge 1 commit intomastertomney/finalfour:masterfrom

dependabot/npm_and_yarn/frontend/json5-and-webpack-and-angular-devkit/build-angular-2.2.3tomney/finalfour:dependabot/npm_and_yarn/frontend/json5-and-webpack-and-angular-devkit/build-angular-2.2.3Copy head branch name to clipboard