Bump @rollup/plugin-json from 4.0.2 to 4.0.3
Bump @rollup/plugin-json from 4.0.2 to 4.0.3

Bumps [@rollup/plugin-json](https://github.com/rollup/plugins) from 4.0.2 to 4.0.3.
- [Release notes](https://github.com/rollup/plugins/releases)
- [Commits](https://github.com/rollup/plugins/compare/url-v4.0.2...json-v4.0.3)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
vega/vega-embed,vega/vega-embed,vega/vega-embed,vega/vega-embed