chore(deps-dev): Bump vega from 5.29.0 to 5.30.0

Bumps [vega](https://github.com/vega/vega) from 5.29.0 to 5.30.0.
- [Release notes](https://github.com/vega/vega/releases)
- [Commits](vega/vega@v5.29.0...v5.30.0)

---
updated-dependencies:
- dependency-name: vega
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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