[Security] Update dependencies to take care of 7 known vulnerabilities

[mike-north]

The vulnerabilities

• https://nodesecurity.io/advisories/577
• https://nodesecurity.io/advisories/577
• https://nodesecurity.io/advisories/118
• https://nodesecurity.io/advisories/577
• https://nodesecurity.io/advisories/577
• https://nodesecurity.io/advisories/118
• https://nodesecurity.io/advisories/577

related: https://github.com/ember-cli/ember-try/issues/200

[simonihmig]

Thank you!