Bump dompurify from 3.3.2 to 3.4.0 in /extensions/mermaid-chat-features (#310377)

Bumps [dompurify](https://github.com/cure53/DOMPurify) from 3.3.2 to 3.4.0.
- [Release notes](https://github.com/cure53/DOMPurify/releases)
- [Commits](https://github.com/cure53/DOMPurify/compare/3.3.2...3.4.0)

---
updated-dependencies:
- dependency-name: dompurify
  dependency-version: 3.4.0
  dependency-type: direct:production
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

extensions/mermaid-chat-features/package-lock.json

@@ -9,7 +9,7 @@
       "version": "10.0.0",
       "license": "MIT",
       "dependencies": {
-        "dompurify": "^3.3.2",
+        "dompurify": "^3.4.0",
         "mermaid": "^11.12.3"
       },
       "devDependencies": {
@@ -974,13 +974,10 @@
       }
     },
     "node_modules/dompurify": {
-      "version": "3.3.2",
-      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.3.2.tgz",
-      "integrity": "sha512-6obghkliLdmKa56xdbLOpUZ43pAR6xFy1uOrxBaIDjT+yaRuuybLjGS9eVBoSR/UPU5fq3OXClEHLJNGvbxKpQ==",
+      "version": "3.4.0",
+      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.4.0.tgz",
+      "integrity": "sha512-nolgK9JcaUXMSmW+j1yaSvaEaoXYHwWyGJlkoCTghc97KgGDDSnpoU/PlEnw63Ah+TGKFOyY+X5LnxaWbCSfXg==",
       "license": "(MPL-2.0 OR Apache-2.0)",
-      "engines": {
-        "node": ">=20"
-      },
       "optionalDependencies": {
         "@types/trusted-types": "^2.0.7"
       }

extensions/mermaid-chat-features/package.json

@@ -130,7 +130,7 @@
     "@vscode/codicons": "^0.0.36"
   },
   "dependencies": {
-    "dompurify": "^3.3.2",
+    "dompurify": "^3.4.0",
     "mermaid": "^11.12.3"
   },
   "overrides": {