fix: upgrade dompurify from 3.4.1 to 3.4.2 (#3453)

Snyk has created this PR to upgrade dompurify from 3.4.1 to 3.4.2.

See this package in npm:
dompurify

See this project in Snyk:
https://app.snyk.io/org/docs-wmk/project/69782e43-c85b-4c27-afd1-ad863be7a38a?utm_source=github&utm_medium=referral&page=upgrade-pr

Co-authored-by: snyk-bot <snyk-bot@snyk.io>

Author: Mpdreamz

src/Elastic.Documentation.Site/package-lock.json

@@ -120,7 +120,7 @@
     "@tanstack/react-query": "^5.100.9",
     "@uidotdev/usehooks": "2.4.1",
     "@theletterf/beautiful-mermaid": "0.1.5",
-    "dompurify": "3.4.1",
+    "dompurify": "3.4.2",
     "highlight.js": "11.11.1",
     "htmx-ext-head-support": "2.0.5",
     "htmx-ext-preload": "2.1.2",