[Snyk] Fix for 5 vulnerabilities

[twilio-product-security]

Snyk has created this PR to fix one or more vulnerable packages in the `npm` dependencies of this project.

Changes included in this PR

• Changes to the following files to upgrade the vulnerable dependencies to a fixed version:
  • package.json
  • package-lock.json

Vulnerabilities that will be fixed

With an upgrade:

Severity	Priority Score (*)	Issue	Breaking Change	Exploit Maturity
	479/1000 Why? Has a fix available, CVSS 5.3	Regular Expression Denial of Service (ReDoS) SNYK-JS-GLOBPARENT-1016905	Yes	No Known Exploit
	601/1000 Why? Proof of Concept exploit, Has a fix available, CVSS 5.6	Prototype Pollution SNYK-JS-MINIMIST-559764	No	Proof of Concept
	601/1000 Why? Proof of Concept exploit, Has a fix available, CVSS 5.6	Prototype Pollution SNYK-JS-YARGSPARSER-560381	No	Proof of Concept
	399/1000 Why? Has a fix available, CVSS 3.7	Denial of Service (DoS) npm:superagent:20170807	Yes	No Known Exploit
	479/1000 Why? Has a fix available, CVSS 5.3	Information Exposure npm:superagent:20181108	Yes	No Known Exploit

(*) Note that the real score may have changed since the PR was raised.

Commit messages

Package name: mocha

The new version differs by 3 commits.

• eb781e2 Release v6.2.3
• 10dbe94 update CHANGELOG for v6.2.3 [ci skip]
• 848d6fb security: update mkdirp, yargs, yargs-parser

See the full diff

Package name: nodemon

The new version differs by 7 commits.

• 9a67f36 feat: update chokidar to v3
• 6781b40 docs: add license file
• 0e6ba3c fix: wait for all subprocesses to terminate (fixes issue #1476)
• b58cf7d chore: Merge branch 'master'
• 95a4c09 docs: add to faq
• 3a2eaf7 choe: merge master
• 3d90879 chore: add logo to site

See the full diff

Package name: supertest

The new version differs by 5 commits.

• 199506d Prepare 3.0.0 release. Small readme updates, update dev libs.
• 1d82e5b Allow TestAgent pass a cert and key to request (#373)
• 188f8f2 Update readme (#392)
• bd63752 Use superagent 3 (#400)
• 3c16aa1 Couple small updates to README

See the full diff

Check the changes in this PR to ensure they won't cause issues with your project.

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