Bump twig/markdown-extra from 3.3.5 to 3.3.8

Bumps [twig/markdown-extra](https://github.com/twigphp/markdown-extra) from 3.3.5 to 3.3.8.
- [Release notes](https://github.com/twigphp/markdown-extra/releases)
- [Commits](twigphp/markdown-extra@v3.3.5...v3.3.8)

---
updated-dependencies:
- dependency-name: twig/markdown-extra
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]