Update changelog for 3.13.1 and bump revision to 31309

Merge pull request wazuh#5269 from wazuh/3.13-update-changelog

Update CHANGELOG.md

Bump revision to 31209

Update changelog and bump revision to 31124

Update Ruleset

Fix Changelog and bump revision to 31206

Merge pull request wazuh#4759 from wazuh/fix-unused-folder

Minor fixes

Update changelog

Update Ruleset

Fix memory leak in Vulnerability Detector.

wm_vuldet_json_nvd_parser() did not free the vulnerability list if JSON_ParseWithOpts() failed.