Bump dompurify from 2.2.8 to 2.2.9

Bumps [dompurify](https://github.com/cure53/DOMPurify) from 2.2.8 to 2.2.9.
- [Release notes](https://github.com/cure53/DOMPurify/releases)
- [Commits](https://github.com/cure53/DOMPurify/compare/2.2.8...2.2.9)

---
updated-dependencies:
- dependency-name: dompurify
  dependency-type: direct:development
  update-type: version-update:semver-patch
...
Signed-off-by: dependabot[bot] <support@github.com>

yarn.lock

@@ -3196,9 +3196,9 @@ domhandler@^2.3.0:
     domelementtype "1"
 
 dompurify@^2.0.1:
-  version "2.2.8"
-  resolved "https://registry.yarnpkg.com/dompurify/-/dompurify-2.2.8.tgz#ce88e395f6d00b6dc53f80d6b2a6fdf5446873c6"
-  integrity sha512-9H0UL59EkDLgY3dUFjLV6IEUaHm5qp3mxSqWw7Yyx4Zhk2Jn2cmLe+CNPP3xy13zl8Bqg+0NehQzkdMoVhGRww==
+  version "2.2.9"
+  resolved "https://registry.yarnpkg.com/dompurify/-/dompurify-2.2.9.tgz#4b42e244238032d9286a0d2c87b51313581d9624"
+  integrity sha512-+9MqacuigMIZ+1+EwoEltogyWGFTJZWU3258Rupxs+2CGs4H914G9er6pZbsme/bvb5L67o2rade9n21e4RW/w==
 
 domutils@1.5.1:
   version "1.5.1"