chore(deps-dev): bump terser from 5.0.0 to 5.1.0
chore(deps-dev): bump terser from 5.0.0 to 5.1.0

Bumps [terser](https://github.com/terser/terser) from 5.0.0 to 5.1.0.
- [Release notes](https://github.com/terser/terser/releases)
- [Changelog](https://github.com/terser/terser/blob/master/CHANGELOG.md)
- [Commits](https://github.com/terser/terser/compare/v5.0.0...v5.1.0)

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