Tech debt: Update Idempotency utility with types from collection versions

[leandrodamascena]

Why is this needed?

PEP 585 recommends using collections for type hints instead of their typing counterparts.

Which area does this relate to?

Idempotency

Suggestion

Update the codebase to replace deprecated typing with the new standard for Python 3.9+.

Acknowledgment

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

[github-actions]

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