Update changelog

Author: jaapmarcus

CHANGELOG.md

@@ -1,6 +1,14 @@
 # Changelog
 All notable changes to this project will be documented in this file.
 
+## [1.5.12] - Service release
+
+### Bugfixes
+
+- Fixed vulnerability with Sed [CVE-2022-XXXX](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-XXXX)
+- Remove localhost exception for invalidating sessions [SSD disclosure](https://ssd-disclosure.com/ssd-advisory-vestacp-multiple-vulnerabilities/)
+- 
+
 ## [1.5.11] - Service release
 
 ### Bugfixes