fix: Update markdown-it

[smockle]

Fixes https://github.com/github/accessibility-alt-text-bot/security/dependabot/20

[Copilot]

Pull request overview

This pull request updates the markdown-it dependency from version 14.1.0 to 14.1.1 to address a security vulnerability (Dependabot alert #20). The update includes a critical ReDoS (Regular Expression Denial of Service) fix in the linkify rule.

Changes:

• Updated markdown-it from 14.1.0 to 14.1.1, which includes a performance and security fix
• Package-lock.json updated with dependency resolution changes (peer flags removed, fsevents added, platform-specific bindings adjusted)

Reviewed changes

Copilot reviewed 1 out of 22 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
package.json	Updated markdown-it version constraint to ^14.1.1
package-lock.json	Updated lock file with new markdown-it version and dependency tree changes
node_modules/markdown-it/package.json	Version bumped to 14.1.1
node_modules/markdown-it/lib/rules_inline/linkify.mjs	ReDoS vulnerability fix - replaced regex with manual loop
node_modules/markdown-it/dist/markdown-it.js	Compiled distribution with security fix and minor formatting changes
node_modules/markdown-it/dist/index.cjs.js	CommonJS build with security fix
node_modules/fsevents/*	Added optional macOS file watcher dependency (2.3.3)
node_modules/@unrs/resolver-binding-*	Platform-specific binary package adjustments
node_modules/.package-lock.json	Internal npm lock file metadata updates

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