[Snyk] Security upgrade yargs from 12.0.5 to 13.1.0

[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	Issue	Breaking Change	Exploit Maturity
	Prototype Pollution SNYK-JS-YARGSPARSER-560381	Yes	Proof of Concept

Commit messages

Package name: yargs

The new version differs by 21 commits.

• 706fc7a chore(release): 13.1.0
• 95700d6 test: add tests for alias behavior, based on conversations today (#1291)
• f45a817 chore: slight refactor of approach being used, add support for per-command
• 5be206a feat: add applyBeforeValidation, for applying sync middleware before validation
• cc8af76 chore(release): 13.0.0
• e9dc3aa feat: options/positionals with leading '+' and '0' no longer parse as numbers (#1286)
• ef16792 chore: drop Node 6 from testing matrix (#1287)
• f25de4f chore: update dependencies (#1284)
• 6916ce9 feat: adds config option for sorting command output (#1256)
• 7b200d2 chore: increase test timeout for windows
• 64af518 fix: middleware added multiple times due to reference bug (#1282)
• 61f1b25 doc: update docs to reflect new parserConfiguration method (#1280)
• 3c6869a feat: Add `.parserConfiguration()` method, deprecating package.json config (#1262)
• da75ea2 fix: better bash path completion (#1272)
• e0c62c8 doc: edit help example to align with actual output (#1271)
• bc0ee40 chore: address @aorinevo's code review so that we can land
• f3a4e4f feat: support promises in middleware
• 64a0d7e docs: Testing command modules (#1267)
• 0510fe6 fix(validation): Use the error as a message when none exists otherwise (#1268)
• 27bf739 fix(deps): Update os-locale to avoid security vulnerability (#1270)
• 54e165d docs(advanced): document non-singleton use, .exit() and parsed (#1251)

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[coveralls]

Coverage remained the same at 100.0% when pulling d73ae17 on snyk-fix-56db93d52352818660b114bf422c69c1 into 8141c1b on master.