Update changelog for 13.12.3

[ci skip]

CHANGELOG.md

@@ -2,6 +2,24 @@
 documentation](doc/development/changelog.md) for instructions on adding your own
 entry.
 
+## 13.12.3 (2021-06-07)
+
+### Added (1 change)
+
+- [Add an option to expose description_html in Release API](gitlab-org/gitlab@47f3fba10dfa82c65b6b006d56cc1724aac411eb) ([merge request](gitlab-org/gitlab!63393))
+
+### Fixed (5 changes)
+
+- [Fix spam detection with Akismet client](gitlab-org/gitlab@75dbe8d017ed691d0517f0a6ca7b9bdd866fa9d9) ([merge request](gitlab-org/gitlab!63393))
+- [Set CSP back to disabled by default](gitlab-org/gitlab@f8f2dbf229693e20171185ae8e31fd59ce2131b3) ([merge request](gitlab-org/gitlab!63393))
+- [Fix CSP issues related to captchas](gitlab-org/gitlab@cec54814460994ea40311f1091fb7f091d04964f) ([merge request](gitlab-org/gitlab!63393))
+- [Fix issue with frames not loading in Safari](gitlab-org/gitlab@77b9355f244370b1c184943581f3b6cc27495931) ([merge request](gitlab-org/gitlab!63393))
+- [Catch PgQuery::ParseError errors and log as-is](gitlab-org/gitlab@a4f36df3701208b5d015e1e818f3d5be3577697a) ([merge request](gitlab-org/gitlab!62795))
+
+### Changed (1 change)
+
+- [Improve SSH key expiration warning emails](gitlab-org/gitlab@2e3929503046ab1da5635ef295321ce08843f937) ([merge request](gitlab-org/gitlab!63393))
+
 ## 13.12.1 (2021-05-25)
 
 ### Fixed (3 changes)