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:jquery:20160529

Latest report for lludol/socket-io-tester:
https://snyk.io/test/github/lludol/socket-io-tester
lludol/socket-io-tester,lludol/socket-io-tester