Bump http-cache-semantics and @angular/cli in /samples/angular-chat#450

dependabot[bot] wants to merge 1 commit intogh-pagesQuickBlox/quickblox-javascript-sdk:gh-pagesfrom

dependabot/npm_and_yarn/samples/angular-chat/http-cache-semantics-and-angular/cli-4.1.1QuickBlox/quickblox-javascript-sdk:dependabot/npm_and_yarn/samples/angular-chat/http-cache-semantics-and-angular/cli-4.1.1Copy head branch name to clipboard