Bump vega from 5.24.0 to 5.26.0

Bumps [vega](https://github.com/vega/vega) from 5.24.0 to 5.26.0.
- [Release notes](https://github.com/vega/vega/releases)
- [Commits](vega/vega@v5.24.0...v5.26.0)

---
updated-dependencies:
- dependency-name: vega
  dependency-type: direct:production
...

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

Author: dependabot[bot]