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:npm:20180222

Latest report for tessel/t2-cli:
https://snyk.io/test/github/tessel/t2-cli
tessel/t2-cli,tessel/t2-cli,nodebotanist/t2-cli,nodebotanist/t2-cli,nodebotanist/t2-cli,tessel/t2-cli