Request the following feature to enable access by 'http://acs.amazonaws.com/groups/global/AllUsers'
to a given s3 bucket.
const bucket = new s3.Bucket(this, 'cdk-lab');
bucket.grantPublicAccess();
The same can be achieved through the following code snippet
bucket.addToResourcePolicy(new cdk.PolicyStatement()
.addAction('s3:GetObject')
.addResource(bucket.arnForObjects('*'))
.addPrincipal(new cdk.Anyone()));