chore(deps): Bump dompurify from 3.3.1 to 3.4.0 in /frontend

[dependabot]

Bumps dompurify from 3.3.1 to 3.4.0.

Release notes

Sourced from dompurify's releases.

DOMPurify 3.4.0

Most relevant changes:

• Fixed a problem with FORBID_TAGS not winning over ADD_TAGS, thanks @​kodareef5
• Fixed several minor problems and typos regarding MathML attributes, thanks @​DavidOliver
• Fixed ADD_ATTR/ADD_TAGS function leaking into subsequent array-based calls, thanks @​1Jesper1
• Fixed a missing SAFE_FOR_TEMPLATES scrub in RETURN_DOM path, thanks @​bencalif
• Fixed a prototype pollution via CUSTOM_ELEMENT_HANDLING, thanks @​trace37labs
• Fixed an issue with ADD_TAGS function form bypassing FORBID_TAGS, thanks @​eddieran
• Fixed an issue with ADD_ATTR predicates skipping URI validation, thanks @​christos-eth
• Fixed an issue with USE_PROFILES prototype pollution, thanks @​christos-eth
• Fixed an issue leading to possible mXSS via Re-Contextualization, thanks @​researchatfluidattacks and others
• Fixed an issue with closing tags leading to possible mXSS, thanks @​frevadiscor
• Fixed a problem with the type dentition patcher after Node version bump
• Fixed freezing BS runs by reducing the tested browsers array
• Bumped several dependencies where possible
• Added needed files for OpenSSF scorecard checks

Published Advisories are here: https://github.com/cure53/DOMPurify/security/advisories?state=published

DOMPurify 3.3.3

• Fixed an engine requirement for Node 20 which caused hiccups, thanks @​Rotzbua

DOMPurify 3.3.2

• Fixed a possible bypass caused by jsdom's faulty raw-text tag parsing, thanks multiple reporters
• Fixed a prototype pollution issue when working with custom elements, thanks @​christos-eth
• Fixed a lenient config parsing in _isValidAttribute, thanks @​christos-eth
• Bumped and removed several dependencies, thanks @​Rotzbua
• Fixed the test suite after bumping dependencies, thanks @​Rotzbua

Commits

• 5b16e0b Getting 3.x branch ready for 3.4.0 release (#1250)
• 8bcbf73 chore: Preparing 3.3.3 release
• 5faddd6 fix: engine requirement (#1210)
• 0f91e3a Update README.md
• d5ff1a8 Merge branch 'main' of github.com:cure53/DOMPurify
• c3efd48 fix: moved back from jsdom 28 to jsdom 20
• 988b888 fix: moved back from jsdom 28 to jsdom 20
• 2726c74 chore: Preparing 3.3.2 release
• 6202c7e build(deps): bump @​tootallnate/once and jsdom (#1204)
• 302b51d fix: Expanded the regex ever so slightly to also cover script
• Additional commits viewable in compare view

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[github-actions]

Dependency Update Analysis

Update Type: minor
Security Update: false
Risk Level: medium
Auto-merge Eligible: false

Analysis Details

• PR Title: chore(deps): Bump dompurify from 3.3.1 to 3.4.0 in /frontend
• Updated by: dependabot[bot]
• Branch: dependabot/npm_and_yarn/frontend/dompurify-3.4.0

Security Audit Results

Frontend (npm audit)

INFO - Unable to parse npm audit results

Backend (safety check)

INFO - Unable to parse safety check results

[github-actions]

Manual Review Required

This dependency update requires manual review:

Reason:

• Update Type: minor
• Risk Level: medium
• Auto-merge Eligible: false

Review Checklist:

• Review changelog for breaking changes
• Test critical application paths
• Verify security implications
• Check for API compatibility
• Validate configuration changes

Next Steps:

1. Review the changes thoroughly
2. Test locally if needed
3. Approve and merge when ready

cc: @maintainers

[remyluslosius]

Closing as Dependabot queue cleanup: this individual PR predates the grouped Dependabot config and is months behind main. Dependabot will re-propose any still-outstanding update for this package at its current version in the next grouped run (see #489 production / #488 development). Closing avoids the stale-version + package-lock conflict cascade.

[dependabot]

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version. You can also ignore all major, minor, or patch releases for a dependency by adding an ignore condition with the desired update_types to your config file.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.