Bump xmldom, ember-cli and ember-data in /frontend#1

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masterjcmundy/embertestapp:masterfrom

dependabot/npm_and_yarn/frontend/xmldom-and-ember-cli-and-ember-data--removedjcmundy/embertestapp:dependabot/npm_and_yarn/frontend/xmldom-and-ember-cli-and-ember-data--removedCopy head branch name to clipboard