feat(aws): add new check ec2_instance_with_outdated_ami

[HugoPBrito]

Context

Amazon EC2 (Elastic Compute Cloud) allows users to launch virtual machines, known as instances, using pre-configured templates called Amazon Machine Images (AMIs). An AMI includes the operating system, application software, and configuration settings required to run an instance.

Over time, some AMIs become deprecated. A deprecated AMI is an image that is no longer recommended for use. While it is still available for launching instances if its ID is known, it does not appear in public searches. Deprecated AMIs may no longer receive security updates, making them a potential risk if used for new instances.

Description

This check identifies EC2 instances running outdated or deprecated AMIs. It retrieves the AMI used by each instance and verifies if it has been deprecated.

Checklist

• Are there new checks included in this PR? Yes.
  • If so, do we need to update permissions for the provider? No.
• Review if the code is being covered by tests.
• Review if code is being documented following this specification https://github.com/google/styleguide/blob/gh-pages/pyguide.md#38-comments-and-docstrings
• Review if backport is needed.
• Review if is needed to change the Readme.md

API

• Verify if API specs need to be regenerated.
• Check if version updates are required (e.g., specs, Poetry, etc.).
• Ensure new entries are added to CHANGELOG.md, if applicable.

License

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.67%. Comparing base (738644f) to head (cabed7d).
Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6910      +/-   ##
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- Coverage   88.69%   88.67%   -0.02%     
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  Files        1200     1201       +1     
  Lines       34621    34667      +46     
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+ Hits        30706    30742      +36     
- Misses       3915     3925      +10     

Flag	Coverage Δ
prowler	88.67% <100.00%> (-0.02%)	⬇️

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Components	Coverage Δ
prowler	88.67% <100.00%> (-0.02%)	⬇️
api	∅ <ø> (∅)