Bump altair from 5.1.2 to 5.2.0

Bumps [altair](https://github.com/altair-viz/altair) from 5.1.2 to 5.2.0.
- [Release notes](https://github.com/altair-viz/altair/releases)
- [Commits](vega/altair@v5.1.2...v5.2.0)

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

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