Bump dompurify from 2.0.6 to 2.0.7

Bumps [dompurify](https://github.com/cure53/DOMPurify) from 2.0.6 to 2.0.7.
- [Release notes](https://github.com/cure53/DOMPurify/releases)
- [Commits](https://github.com/cure53/DOMPurify/compare/2.0.6...2.0.7

)

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