Maintenance: Migrate to husky v9 syntax to remove deprecation warning

[hjgraca]

Summary

When running init-environment command we get a deprecation notice for husky install command. Husky has deprecated that command in favour of husky command and has new syntax for the hooks as well.

Why is this needed?

Prevent the display of deprecation notice and support new version to avoid issues when deprecated.

Which area does this relate to?

Automation

Solution

Update hooks and init-environment command. Migration steps can be found on the release https://github.com/typicode/husky/releases/tag/v9.0.1

Acknowledgment

• [X] This request meets Powertools for AWS Lambda (TypeScript) Tenets
• [ ] Should this be considered in other Powertools for AWS Lambda languages? i.e. Python, Java, and .NET

Future readers

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