Maintenance: Remove closed issues workflow

[leandrodamascena]

Why is this needed?

We are migrating some actions to use a new application in our repository and we don't need the closed issues action anymore.

Which area does this relate to?

Automation

Solution

Remove closed issue action.

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

[leandrodamascena]

Closed as complete via #7047

[powertools-for-aws-oss-automation]

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[github-actions]

This is now released under 3.18.0 version!