bump svgo from 2.8.0 to 2.8.3

Bumps [svgo](https://github.com/svg/svgo) from 2.8.0 to 2.8.3.
- [Release notes](https://github.com/svg/svgo/releases)
- [Commits](svg/svgo@v2.8.0...v2.8.3)

---
updated-dependencies:
- dependency-name: svgo
  dependency-version: 2.8.3
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]