chore(changelog): prepare for 5.5.1 (#7523)

.github/workflows/sdk-pull-request.yml

@@ -34,6 +34,7 @@ jobs:
             permissions/**
             api/**
             ui/**
+            prowler/CHANGELOG.md
             README.md
             mkdocs.yml
             .backportrc.json

api/CHANGELOG.md

@@ -2,7 +2,7 @@
 
 All notable changes to the **Prowler API** are documented in this file.
 
-## [v1.6.1] (Prowler UNRELEASED)
+## [v1.6.1] (Prowler v5.5.1)
 
 ### Changed
 - Changed `findings.uid` field length from `varchar(300)` to `varchar(600)` [(#7498)](https://github.com/prowler-cloud/prowler/pull/7498).

prowler/CHANGELOG.md

@@ -11,7 +11,7 @@ All notable changes to the **Prowler SDK** are documented in this file.
 
 ---
 
-## [v5.5.1] (Prowler UNRELEASED)
+## [v5.5.1] (Prowler v5.5.1)
 
 ### Fixed