[Snyk] Security upgrade markdownlint-cli from 0.19.0 to 0.31.0

[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	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-MARKDOWNIT-2331914	No	No Known Exploit

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

Commit messages

Package name: markdownlint-cli

The new version differs by 174 commits.

• fec244c Bump version 0.31.0
• a0527a8 Set two more Prettier options explicitly for a consistent experience (refs #247).
• e45d433 Enable "Prettier" validation for "xo", configure settings for minimal non-space deltas, apply all required changes (fixes #246, closes #247).
• 4baec11 Update to invoke execa as an ESM import.
• f771c6b Bump execa from 5.1.1 to 6.0.0
• c327fb5 Update to invoke get-stdin as an ESM import.
• aca74ca Bump get-stdin from 8.0.0 to 9.0.0
• c48be7b Bump commander from 8.3.0 to 9.0.0 (#256)
• e1f0f3b fix: vuln in markdown > markdown-it (#255)
• 3009422 Bump ava from 3.15.0 to 4.0.1 (#253)
• 5276c70 Update dependency: markdownlint to 0.25.0.
• 18eb72d Bump actions/setup-node from 2.5.0 to 2.5.1 (#251)
• 38956ca Bump markdownlint-rule-helpers from 0.15.0 to 0.16.0 (#250)
• 318c1c3 Bump ignore from 5.1.9 to 5.2.0 (#248)
• c5a8b48 Standardize and improve exit code handling (#245)
• 799ed61 chore: Add Node 17 to CI matrix (#244)
• e3f5a6c chore: use built-in setup-node NPM cache (#243)
• 219cc3b Bump actions/setup-node from 2.4.1 to 2.5.0 (#242)
• 3e989a4 Bump xo from 0.46.4 to 0.47.0 (#241)
• 2ea8a2c Remove unused/outdated helper packages, replace with native JavaScript functions (fixes #237).
• 328dacc Bump version 0.30.0
• 27dc20f Add exitCode check to all tests.
• bf8b148 Rebuild package-lock.json to try to fix "npm ci".
• 27d5e70 Update CI workflow to include linting step.

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