Update CHANGELOG.md

Author: thomaseizinger

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.3.0] - 2021-10-12
+
 ### Added
 
 -  New optional `tag` argument allowing `v`-prefixed versions
@@ -43,8 +45,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 -   Initial release of this action!
+-   
+[Unreleased]: https://github.com/thomaseizinger/keep-a-changelog-new-release/compare/1.3.0...HEAD
 
-[Unreleased]: https://github.com/thomaseizinger/keep-a-changelog-new-release/compare/1.2.1...HEAD
+[1.3.0]: https://github.com/thomaseizinger/keep-a-changelog-new-release/compare/1.2.1...1.3.0
 
 [1.2.1]: https://github.com/thomaseizinger/keep-a-changelog-new-release/compare/1.2.0...1.2.1