[Snyk] Security upgrade libnpx from 10.2.0 to 10.2.4

[snyk-bot]

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
	472/1000 Why? Proof of Concept exploit, CVSS 7.3	Prototype Pollution SNYK-JS-Y18N-1021887	No	Proof of Concept

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

Commit messages

Package name: libnpx

The new version differs by 15 commits.

• 84eeb54 chore(release): 10.2.4
• 7a03da5 test: patch child.js test
• 122ed5c deps: update yargs
• fa6a282 chore(release): 10.2.3
• 7d90a71 chore: update project settings, remove weall* stuff
• 26a8394 chore(release): 10.2.2
• e0eb3cb fix: install latest npm on travis for node 6
• e8b4a7e chore: put node 6 back in travis set
• 9a23db1 fix: correct Kat's github url
• 3733137 fix: Update changelog to fix old issue links
• 3192e0f v10.2.1
• 40df81c fix: point repo at proper git remote
• 43d68c8 fix: spurious test failure
• f51a8d3 travis: only test on supported node versions
• b7c8b9f fix(platform): drop node 4 and 7, add 9 and 10

See the full diff

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

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