fix: package.json to reduce vulnerabilities
fix: package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/npm:debug:20170905
- https://snyk.io/vuln/npm:mime:20170907
- https://snyk.io/vuln/npm:debug:20170905
- https://snyk.io/vuln/npm:fresh:20170908

Latest report for ice-services/moleculer-web:
https://snyk.io/test/github/ice-services/moleculer-web
ice-services/moleculer-web,ice-services/moleculer-web