Bump dompdf/dompdf from 2.0.4 to 2.0.8

Bumps [dompdf/dompdf](https://github.com/dompdf/dompdf) from 2.0.4 to 2.0.8.
- [Release notes](https://github.com/dompdf/dompdf/releases)
- [Commits](dompdf/dompdf@v2.0.4...v2.0.8)

---
updated-dependencies:
- dependency-name: dompdf/dompdf
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]