Bump dompurify from 2.3.12 to 2.4.0

Bumps [dompurify](https://github.com/cure53/DOMPurify) from 2.3.12 to 2.4.0.
- [Release notes](https://github.com/cure53/DOMPurify/releases)
- [Commits](https://github.com/cure53/DOMPurify/compare/2.3.12...2.4.0)

---
updated-dependencies:
- dependency-name: dompurify
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -14,7 +14,7 @@
         "@fortawesome/free-solid-svg-icons": "^6.1.2",
         "@fortawesome/vue-fontawesome": "^3.0.1",
         "buffer": "^6.0.3",
-        "dompurify": "^2.3.12",
+        "dompurify": "^2.4.0",
         "hotkeys-js": "^3.9.5",
         "javascript-time-ago": "^2.5.7",
         "mux.js": "^6.2.0",

yarn.lock

@@ -1950,10 +1950,10 @@ dom-walk@^0.1.0:
   resolved "https://registry.yarnpkg.com/dom-walk/-/dom-walk-0.1.2.tgz#0c548bef048f4d1f2a97249002236060daa3fd84"
   integrity sha512-6QvTW9mrGeIegrFXdtQi9pk7O/nSK6lSdXW2eqUspN5LWD7UTji2Fqw5V2YLjBpHEoU9Xl/eUWNpDeZvoyOv2w==
 
-dompurify@^2.3.12:
-  version "2.3.12"
-  resolved "https://registry.yarnpkg.com/dompurify/-/dompurify-2.3.12.tgz#0c8a5cabc5d7a7cf2635645cfd5061deab73f3d2"
-  integrity sha512-KkCEdpWPXBkF9IP9afmYPDB24nRZRUsThsjuWKM8Cpp9+WXKJmC6FZxSyPIiiQezkYa3+Mm1oo6dh60NxBXkyw==
+dompurify@^2.4.0:
+  version "2.4.0"
+  resolved "https://registry.yarnpkg.com/dompurify/-/dompurify-2.4.0.tgz#c9c88390f024c2823332615c9e20a453cf3825dd"
+  integrity sha512-Be9tbQMZds4a3C6xTmz68NlMfeONA//4dOavl/1rNw50E+/QO0KVpbcU0PcaW0nsQxurXls9ZocqFxk8R2mWEA==
 
 duplexer@^0.1.2:
   version "0.1.2"