build(deps-dev): bump immutable from 5.1.2 to 5.1.5 in /frontend/src/angular#90

Angular2Guy merged 1 commit intomasterAngular2Guy/AngularAndSpring:masterfrom

dependabot/npm_and_yarn/frontend/src/angular/immutable-5.1.5Angular2Guy/AngularAndSpring:dependabot/npm_and_yarn/frontend/src/angular/immutable-5.1.5Copy head branch name to clipboard