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:http-signature:20150122
- https://snyk.io/vuln/npm:jquery:20150627
- https://snyk.io/vuln/npm:react-dom:20180802

pankaj-arunsingh/React-demo-app,pankaj-arunsingh/React-demo-app