[Security] Bump handlebars from 4.7.6 to 4.7.7#123

dependabot-preview[bot] wants to merge 1 commit intomasterember-polyfills/ember-async-observers-polyfill:masterfrom

dependabot/npm_and_yarn/handlebars-4.7.7ember-polyfills/ember-async-observers-polyfill:dependabot/npm_and_yarn/handlebars-4.7.7Copy head branch name to clipboard