build(deps): bump dompurify (#18426)

Bumps the npm_and_yarn group with 1 update in the /boundaries/platform/backstage directory: [dompurify](https://github.com/cure53/DOMPurify).


Updates `dompurify` from 2.5.6 to 2.5.7
- [Release notes](https://github.com/cure53/DOMPurify/releases)
- [Commits](cure53/DOMPurify@2.5.6...2.5.7)

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

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

Author: dependabot[bot]

boundaries/platform/backstage/yarn.lock

@@ -18933,9 +18933,9 @@ __metadata:
   linkType: hard
 
 "dompurify@npm:^2.2.7":
-  version: 2.5.6
-  resolution: "dompurify@npm:2.5.6"
-  checksum: 10c0/ee7e7d17982b1017a20982a2d57a0463d7fbb67f7b92a13ecf772e5e6acf0a529a19e3e31d725b05d5a2524d40e0aeb7ebc4be0aff396a6345bd6f2749fe560d
+  version: 2.5.7
+  resolution: "dompurify@npm:2.5.7"
+  checksum: 10c0/23c4f737182fcf3e731e458c3930ef4d2916191e4180e1e345f153124dfa7ec117d2810af1754e8854c581131fc75dac914a8391183d1511852ef32b4055f711
   languageName: node
   linkType: hard