chore: upgrade dompurify to ^3.4.12 to address GHSA-c2j3-45gr-mqc4

Generated with [Linear](https://linear.app/sourcebot/issue/SOU-1583/sourcebot-devsourcebot-ghsa-c2j3-45gr-mqc4-dompurify-custom-element#agent-session-e795fc88)

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

Author: linear-code[bot]

CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 - Upgraded `tar` to `^7.5.20`. [#1474](https://github.com/sourcebot-dev/sourcebot/pull/1474)
+- Upgraded `dompurify` to `^3.4.12`. [#1490](https://github.com/sourcebot-dev/sourcebot/pull/1490)
 
 ### Changed
 - Reduced Sentry span sampling to 10% outside development. [#1475](https://github.com/sourcebot-dev/sourcebot/pull/1475)

yarn.lock

@@ -13660,14 +13660,14 @@ __metadata:
   linkType: hard
 
 "dompurify@npm:^3.3.2, dompurify@npm:^3.3.3":
-  version: 3.4.11
-  resolution: "dompurify@npm:3.4.11"
+  version: 3.4.12
+  resolution: "dompurify@npm:3.4.12"
   dependencies:
     "@types/trusted-types": "npm:^2.0.7"
   dependenciesMeta:
     "@types/trusted-types":
       optional: true
-  checksum: 10c0/31439481c7e8fc3805d40c376936fd66936620fb1b1a31a2ec097f6165412c37f2d868e082c9ceba62bb37661c1ea132a5db4d5213434317e30df68d4aca9cc9
+  checksum: 10c0/127a13817353d4e20e75a991a9022a04c3af12af7479f68e2b8bee6dbc7330a96edfb8f4ebff96f4f0f24cd43e8dbba46214131f510c3aa87a843bd8b610d0ab
   languageName: node
   linkType: hard