chore: upgrade dompurify to ^3.4.11 to address GHSA-vxr8-fq34-vvx9

Refreshes the dompurify lockfile entry (transitive via posthog-js) to
3.4.11, which is >= 3.4.9 and covers GHSA-vxr8-fq34-vvx9.

Generated with [Linear](https://linear.app/sourcebot/issue/SOU-1355/sourcebot-devsourcebot-ghsa-vxr8-fq34-vvx9-dompurify-trusted-types#agent-session-2f168cd3)

Co-authored-by: linear-code[bot] <222613912+linear-code[bot]@users.noreply.github.com>

Author: brendan-kellam

yarn.lock

@@ -13127,14 +13127,14 @@ __metadata:
   linkType: hard
 
 "dompurify@npm:^3.3.2":
-  version: 3.4.0
-  resolution: "dompurify@npm:3.4.0"
+  version: 3.4.11
+  resolution: "dompurify@npm:3.4.11"
   dependencies:
     "@types/trusted-types": "npm:^2.0.7"
   dependenciesMeta:
     "@types/trusted-types":
       optional: true
-  checksum: 10c0/5593ac44ee20b9aa521c2120884effc98927fb9128c548183c75e79e0a04357c62ee913a049a267c8f396cb8c9d520ecf72562826c5524c46d4fe03c12063638
+  checksum: 10c0/31439481c7e8fc3805d40c376936fd66936620fb1b1a31a2ec097f6165412c37f2d868e082c9ceba62bb37661c1ea132a5db4d5213434317e30df68d4aca9cc9
   languageName: node
   linkType: hard