update CHANGELOG.md

Author: diodonfrost

CHANGELOG.md

@@ -5,6 +5,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/v1.0.0/)
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+## [2.1.5] - 2019-10-17
+### Changed
+-   Improve rds error catching
+
 ## [2.1.4] - 2019-10-16
 ### Changed
 -   Fix autoscaling scheduler when autoscaling list are empty
@@ -153,7 +157,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 -   rds clusters support with scheduler
 
 
-[Unreleased]: https://github.com/diodonfrost/terraform-aws-lambda-scheduler-stop-start/compare/2.1.4...HEAD
+[Unreleased]: https://github.com/diodonfrost/terraform-aws-lambda-scheduler-stop-start/compare/2.1.5...HEAD
+[2.1.5]: https://github.com/diodonfrost/terraform-aws-lambda-scheduler-stop-start/compare/2.1.4...2.1.5
 [2.1.4]: https://github.com/diodonfrost/terraform-aws-lambda-scheduler-stop-start/compare/2.1.3...2.1.4
 [2.1.3]: https://github.com/diodonfrost/terraform-aws-lambda-scheduler-stop-start/compare/2.1.2...2.1.3
 [2.1.2]: https://github.com/diodonfrost/terraform-aws-lambda-scheduler-stop-start/compare/2.1.1...2.1.2