CHANGELOG: add 1.2.1 section

Author: zombiezen

CHANGELOG.md

@@ -4,9 +4,14 @@ The format is based on [Keep a Changelog][], and this project adheres to
 [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 [Keep a Changelog]: https://keepachangelog.com/en/1.0.0/
-[Unreleased]: https://github.com/gg-scm/gg/compare/v1.2.0...HEAD
+[Unreleased]: https://github.com/gg-scm/gg/compare/v1.2.1...HEAD
 
-## [Unreleased][]
+## [1.2.1][] - 2022-02-26
+
+1.2.1 contains a packaging/testing bugfix,
+but is otherwise identical to 1.2.0.
+
+[1.2.1]: https://github.com/gg-scm/gg/releases/tag/v1.2.1
 
 ### Fixed
 

misc/gg.1.md

@@ -1,4 +1,4 @@
-% gg(1) gg 1.0.2 | gg Manual
+% gg(1) gg 1.2.1 | gg Manual
 
 # NAME