chore(api): Update changelog

[vicferpoy]

Description

Updated API changelog for Prowler v5.4.0.

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.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.01%. Comparing base (48c2c85) to head (a7ad3ab).
Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7090      +/-   ##
==========================================
+ Coverage   88.74%   92.01%   +3.26%     
==========================================
  Files        1207       79    -1128     
  Lines       35041     6986   -28055     
==========================================
- Hits        31098     6428   -24670     
+ Misses       3943      558    -3385     

Flag	Coverage Δ
api	92.01% <ø> (?)
prowler	?

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

Components	Coverage Δ
prowler	∅ <ø> (∅)
api	92.01% <ø> (∅)