Add version variable to cdk template logger

[GeordieEK]

Addresses issue #1401

Extend CDK template to use VERSION variable in logger.

I also re-organised cdk config slightly so that it better matches serverless config at a glance.

I have opted for a patch changeset as per contribution guidelines of minor changes involving templates.

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: d86dd71a1a814f2b518c882e642157e74e361542

The changes in this PR will be included in the next version bump.

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[samchungy]

Thanks for the hard work 🙇