Update owners for 2022 (#18155)

CONTRIBUTING.md

@@ -299,6 +299,11 @@ and lead the development of Gitea.
 To honor the past owners, here's the history of the owners and the time
 they served:
 
+* 2022-01-01 ~ 2022-12-31 - https://github.com/go-gitea/gitea/issues/17872
+  * [Lunny Xiao](https://gitea.com/lunny) <xiaolunwen@gmail.com>
+  * [Matti Ranta](https://gitea.com/techknowlogick) <techknowlogick@gitea.io>
+  * [Andrew Thornton](https://gitea.com/zeripath) <art27@cantab.net>
+
 * 2021-01-01 ~ 2021-12-31 - https://github.com/go-gitea/gitea/issues/13801
   * [Lunny Xiao](https://gitea.com/lunny) <xiaolunwen@gmail.com>
   * [Lauris Bukšis-Haberkorns](https://gitea.com/lafriks) <lauris@nix.lv>