[Snyk] Security upgrade documentation from 5.5.0 to 9.3.1

[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

Vulnerabilities that will be fixed

With an upgrade:

Severity	Priority Score (*)	Issue	Breaking Change	Exploit Maturity
	686/1000 Why? Proof of Concept exploit, Has a fix available, CVSS 7.3	Prototype Pollution SNYK-JS-Y18N-1021887	Yes	Proof of Concept

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

Commit messages

Package name: documentation

The new version differs by 128 commits.

• a4d4583 chore(release): 9.3.1
• 15bbc06 Adding additional cli option, markdown-toc-max-depth for configuring markdown-toc maxDepth (#1215)
• 04a0a29 chore(deps): update yargs to 12.0.2 (#1214)
• 47f0572 chore(release): 9.3.0
• 64c9ca6 feat: Add inner section (#1212)
• 8ff9331 chore: Upgrade yarn.lock for test deps
• f07064e chore(release): 9.2.1
• f5f042a chore(deps): Bump highlight.js to known working version (#1210)
• a648d92 chore(release): 9.2.0
• 5b045f2 feat: Add favicon option (#1207)
• fb0a27f fix(default theme): only render either note or section (fixes #1113) (#1206)
• c5f32ae refactor: remove text/css from default theme #1203, #1200
• 8a00a0f chore(release): 9.1.1
• 2d0bd0e fix: inferred properties duplicating explicitly specified ones
• 44e36c9 chore(release): 9.1.0
• ccd56b6 ci(coveralls): Remove coveralls
• ca5a681 feat: support spead types
• 6e74050 doc: Fix CLI examples
• f66dd11 doc: remove Greenkeeper
• 1ebc48f chore: remove .flowconfig, update yarn.lock
• e4e6afb chore(release): 9.0.0
• c3aaa86 refactor: remove flow and related dependencies, test on 10 not latest, skip slow tests
• d04a555 URL updates for README (#1193)
• 58d2a2f feat: Support for the logical assignment operator

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