Bump dompurify and @httptoolkit/accounts in /api

Removes [dompurify](https://github.com/cure53/DOMPurify). It's no longer used after updating ancestor dependency [@httptoolkit/accounts](https://github.com/httptoolkit/accounts). These dependencies need to be updated together.


Removes `dompurify`

Updates `@httptoolkit/accounts` from 2.3.0 to 3.0.1
- [Commits](v2.3.0...v3.0.1)

---
updated-dependencies:
- dependency-name: dompurify
  dependency-version: 
  dependency-type: indirect
- dependency-name: "@httptoolkit/accounts"
  dependency-version: 3.0.1
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]