NPM: Bump the npm-dependencies group with 2 updates

Bumps the npm-dependencies group with 2 updates: [vega](https://github.com/vega/vega) and [esbuild](https://github.com/evanw/esbuild).


Updates `vega` from 5.28.0 to 5.29.0
- [Release notes](https://github.com/vega/vega/releases)
- [Commits](vega/vega@v5.28.0...v5.29.0)

Updates `esbuild` from 0.20.2 to 0.21.2
- [Release notes](https://github.com/evanw/esbuild/releases)
- [Changelog](https://github.com/evanw/esbuild/blob/main/CHANGELOG.md)
- [Commits](evanw/esbuild@v0.20.2...v0.21.2)

---
updated-dependencies:
- dependency-name: vega
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: npm-dependencies
- dependency-name: esbuild
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: npm-dependencies
...

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

Author: dependabot[bot]