chore(deps): bump dompurify from 3.4.13 to 3.4.16 in /frontend

[dependabot]

Bumps dompurify from 3.4.13 to 3.4.16.

Release notes

Sourced from dompurify's releases.

DOMPurify 3.4.16

• Fixed a problem with IN_PLACE node removal when working with hooks, thanks @​manus-pi
• Fixed a problem with IN_PLACE sanitization and raw-text roots, thanks @​h-t-m
• Fixed a problem with ESM default exports landing in CommonJS declarations, thanks @​ssi02014
• Migrated from rollup to rolldown because performance, thanks @​ssi02014
• Bumped several dependencies where possible

DOMPurify 3.4.15

• Added better clobbering hardening when XML content is involved, thanks @​gnyselcuk
• Added several smaller hardening and edge-case improvements, thanks @​leechristensen
• Bumped several dependencies where possible

DOMPurify 3.4.14

• Fixed an issue with possible bypasses when risky tags are allow-listed, thanks @​AlirezaRouhbakhsh
• Fixed a couple of edge cases with mixed document contexts, thanks @​fishjojo1
• Added the SVG pointer-events and vector-effect presentation attributes to the allow-list, thanks @​Jaybhade
• Conducted another refactoring run, removed dead branches and duplicated logic, flattened attribute validation
• Updated the documentation in several spots, README, wiki, etc., thanks @​Akokonunes
• Updated several development dependencies and CI workflow actions

Commits

• b9b9d80 release: 3.4.16 (#1636)
• 1d7460c release: 3.4.15 (#1609)
• 4e6fe24 release: 3.4.14 (#1587)
• See full diff in compare view

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[claude]

Review: this is a patch bump of dompurify from 3.4.13 to 3.4.16, and it only touches package.json and yarn.lock. The lockfile entry is consistent with the manifest.

• Security: The upstream notes for 3.4.14 to 3.4.16 list hardening and bypass fixes: risky allow-listed tags, XML clobbering, and IN_PLACE edge cases. Taking these is good.
• Compatibility: Only patch versions changed, so I expect no API breakage. The 3.4.16 release moved DOMPurify's own build from rollup to rolldown. That should not affect consumers, but yarn build is a cheap check that the Vite bundle still resolves the package correctly.
• Tests: No new tests are needed. I did not run the frontend unit or component tests, so please confirm that the existing ones that use DOMPurify sanitization pass in CI.
• Changelog: A changelog.d/<slug>.security.md fragment would be optional here, since this is a dependency bump.

LGTM once CI is green.