Bump svgo from 3.3.2 to 3.3.3 in /contrib/docs

Bumps [svgo](https://github.com/svg/svgo) from 3.3.2 to 3.3.3.
- [Release notes](https://github.com/svg/svgo/releases)
- [Commits](svg/svgo@v3.3.2...v3.3.3)

---
updated-dependencies:
- dependency-name: svgo
  dependency-version: 3.3.3
  dependency-type: indirect
...

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

Author: dependabot[bot]