Bump dompurify from 2.4.4 to 2.5.6 (#983)

Bumps [dompurify](https://github.com/cure53/DOMPurify) from 2.4.4 to 2.5.6.
- [Release notes](https://github.com/cure53/DOMPurify/releases)
- [Commits](cure53/DOMPurify@2.4.4...2.5.6)

---
updated-dependencies:
- dependency-name: dompurify
  dependency-type: indirect
...

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

yarn.lock

@@ -4953,9 +4953,9 @@ domhandler@^4.0.0, domhandler@^4.2.0, domhandler@^4.3.0:
     domelementtype "^2.2.0"
 
 dompurify@^2.4.3:
-  version "2.4.4"
-  resolved "https://registry.yarnpkg.com/dompurify/-/dompurify-2.4.4.tgz#c17803931dd524e1b68e0e940a84567f9498f4bd"
-  integrity sha512-1e2SpqHiRx4DPvmRuXU5J0di3iQACwJM+mFGE2HAkkK7Tbnfk9WcghcAmyWc9CRrjyRRUpmuhPUH6LphQQR3EQ==
+  version "2.5.6"
+  resolved "https://registry.yarnpkg.com/dompurify/-/dompurify-2.5.6.tgz#8402b501611eaa7fb3786072297fcbe2787f8592"
+  integrity sha512-zUTaUBO8pY4+iJMPE1B9XlO2tXVYIcEA4SNGtvDELzTSCQO7RzH+j7S180BmhmJId78lqGU2z19vgVx2Sxs/PQ==
 
 domutils@^1.7.0:
   version "1.7.0"