Add changelog for 1.22.6

Author: lunny

CHANGELOG.md

@@ -4,6 +4,16 @@ This changelog goes through the changes that have been made in each release
 without substantial changes to our git log; to see the highlights of what has
 been added to each release, please refer to the [blog](https://blog.gitea.com).
 
+## [1.22.6](https://github.com/go-gitea/gitea/releases/tag/v1.22.6) - 2024-12-12
+
+* SECURITY
+  * Fix misuse of PublicKeyCallback(#32810)
+* BUGFIXES
+  * Fix lfs migration (#32812) (#32818)
+  * Add missing two sync feed for refs/pull (#32815)
+* TESTING
+  * Avoid MacOS keychain dialog in integration tests (#32813) (#32816)
+
 ## [1.22.5](https://github.com/go-gitea/gitea/releases/tag/v1.22.5) - 2024-12-11
 
 * SECURITY