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:react-dom:20180802
- https://snyk.io/vuln/npm:ua-parser-js:20180227

marhyorh/marhyorh.github.io,marhyorh/marhyorh.github.io