Maintenance: Use correct license

[saragerion]

Bug description

Right now the repo is referencing the wrong license.
This one should be used instead (also important for consistency):
https://github.com/awslabs/aws-lambda-powertools-python/blob/develop/LICENSE

Expected Behavior

Licenses are consistent across languages

Current Behavior

A wrong license is referenced.

Possible Solution

Steps to Reproduce

Go to: https://github.com/awslabs/aws-lambda-powertools-typescript/blob/main/LICENSE

Environment

• Powertools version used:
• Packaging format (Layers, npm):
• AWS Lambda function runtime:
• Debugging logs:

Related issues, RFCs

[github-actions]

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