Update changelog for v3.1.2

Author: TomWright

CHANGELOG.md

@@ -9,6 +9,18 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Nothing yet.
 
+## [v3.1.2] - 2025-12-17
+
+### Fixed
+
+- Fix XML reading/writing when XML processing instructions are present.
+
+## [v3.1.1] - 2025-12-16
+
+### Fixed
+
+- Homebrew release.
+
 ## [v3.1.0] - 2025-12-16
 
 ### Added
@@ -709,7 +721,9 @@ See [documentation](https://daseldocs.tomwright.me) for all changes.
 
 - Everything!
 
-[unreleased]: https://github.com/TomWright/dasel/compare/v3.1.0...HEAD
+[unreleased]: https://github.com/TomWright/dasel/compare/v3.1.2...HEAD
+[v3.1.2]: https://github.com/TomWright/dasel/compare/v3.1.1...v3.1.2
+[v3.1.1]: https://github.com/TomWright/dasel/compare/v3.1.0...v3.1.1
 [v3.1.0]: https://github.com/TomWright/dasel/compare/v3.0.0...v3.1.0
 [v3.0.0]: https://github.com/TomWright/dasel/compare/v2.8.1...v3.0.0
 [v2.8.1]: https://github.com/TomWright/dasel/compare/v2.8.0...v2.8.1