build(deps-dev): bump chai from 3.5.0 to 4.3.4#15

ndekeister-us merged 1 commit intomasterpeopledoc/ember-cli-deploy-index-json:masterfrom

dependabot-npm_and_yarn-chai-4.3.4peopledoc/ember-cli-deploy-index-json:dependabot-npm_and_yarn-chai-4.3.4Copy head branch name to clipboard