fix(aws): do not flag cross-service confused deputy as public

[MrCloudSec]

Context

Fix #5454.

Description

Do not flag IAM policies with cross service confused deputy as public unless the argument check_cross_service_confused_deputy is passed to the is_policy_public function.

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.

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 89.72%. Comparing base (9a7190c) to head (a662eba).
Report is 1159 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #5593   +/-   ##
=======================================
  Coverage   89.71%   89.72%           
=======================================
  Files        1101     1102    +1     
  Lines       34192    34215   +23     
=======================================
+ Hits        30674    30698   +24     
+ Misses       3518     3517    -1     

Components	Coverage Δ
prowler	89.72% <ø> (+<0.01%)	⬆️
api	∅ <ø> (∅)

[jfagoagas]

Great fix!!