Bump @babel/plugin-proposal-class-properties from 7.2.1 to 7.3.0 Bumps [@babel/plugin-proposal-class-properties](https://github.com/babel/babel) from 7.2.1 to 7.3.0. - [Release notes](https://github.com/babel/babel/releases) - [Changelog](https://github.com/babel/babel/blob/master/CHANGELOG.md) - [Commits](https://github.com/babel/babel/compare/v7.2.1...v7.3.0) Signed-off-by: dependabot[bot]