Removes AWS-CDK V1 support; Bumps minor dependency versions

[pistazie]

No description provided.

[swiesmann]

I noticed there is another way to get a unique ID via

const uid: string = Names.uniqueId(myConstruct);
(from the aws docs https://docs.aws.amazon.com/cdk/v2/guide/identifiers.html)

But since it expects a construct we would have basically do CDK backwards: parsing the CloudFormation JSON into constructs somehow. 🙈

So copying the makeUniqueId function over makes more sense. We would have to check for license conflicts as the official cdk is under Apache V2 while cdk-dia is MIT licensed.

[robdmoore]

Hi, Is there an eta on this one landing? Love this project, but needing to take dependency on v1 cdk is becoming increasingly difficult as it gets more and more out of date and brings in vulnerable dependencies to the project. 🙏