v2.0.0-alpha.4
chore(release): 2.0.0-alpha.4 (#12959) See [CHANGELOG](https://github.com/aws/aws-cdk/blob/bump/2.0.0-alpha.4/CHANGELOG.md)
chore(release): 2.0.0-alpha.4 (#12959) See [CHANGELOG](https://github.com/aws/aws-cdk/blob/bump/2.0.0-alpha.4/CHANGELOG.md)