fix(aws): list tags for DocumentDB clusters

[kagahd]

Context

Until now, only the tags of the DocumentDB instances and snapshots were read out but not the tags of the cluster.

Description

This fix lists also the tags of the cluster.

Checklist

• Are there new checks included in this PR? 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

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

Attention: Patch coverage is 71.42857% with 2 lines in your changes missing coverage. Please review.

Project coverage is 89.41%. Comparing base (b56d62e) to head (363514e).
Report is 9 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6605      +/-   ##
==========================================
- Coverage   89.43%   89.41%   -0.03%     
==========================================
  Files        1182     1182              
  Lines       33790    33797       +7     
==========================================
- Hits        30219    30218       -1     
- Misses       3571     3579       +8     

Flag	Coverage Δ
prowler	89.41% <71.42%> (-0.03%)	⬇️

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

Components	Coverage Δ
prowler	89.41% <71.42%> (-0.03%)	⬇️
api	∅ <ø> (∅)

[MrCloudSec]

Thanks @kagahd , good catch!!

[prowler-bot]

💚 All backports created successfully

Status	Branch	Result
✅	v3
✅	v4.6
✅	v5.1

Questions ?

Please refer to the Backport tool documentation and see the Github Action logs for details