Maintenance: remove Jest from codebase

[dreamorosi]

Summary

With the migration to Vitest complete for all our unit and e2e tests, we can now remove Jest and its dependencies from the codebase.

Why is this needed?

So that we can consider this work stream complete, and close the migration.

Which area does this relate to?

Other

Solution

No response

Acknowledgment

• 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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[github-actions]

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[github-actions]

This is now released under v2.12.0 version!