fix(ecs): ensure unique finding id in ECS checks

[MrCloudSec]

Context

Fix #7050

Description

Ensure Prowler creates unique Finding UIDs in ECS by using also the cluster name inside the service ID.

Checklist

• Are there new checks included in this PR? Yes / No
  • If so, do we need to update permissions for the provider? Please review this carefully.
• 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.

[andoniaf]

🙌

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.79%. Comparing base (89237ab) to head (aae7cff).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7059      +/-   ##
==========================================
+ Coverage   88.76%   88.79%   +0.03%     
==========================================
  Files        1201     1201              
  Lines       34920    34921       +1     
==========================================
+ Hits        30996    31008      +12     
+ Misses       3924     3913      -11     

Flag	Coverage Δ
prowler	88.79% <100.00%> (+0.03%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
prowler	88.79% <100.00%> (+0.03%)	⬆️
api	∅ <ø> (∅)