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:ms:20170412

Latest report for lvlup-pro/spawn-frontend-material:
https://snyk.io/test/github/lvlup-pro/spawn-frontend-material
lvlup-pro/spawn-frontend-material,lvlup-pro/spawn-frontend-material