Pull in changelog entry for 5.0.1

5.0.0 was released from the 5-0-stable branch, but we want to include it
in the master changelog as well

Author: yob

CHANGELOG.md

@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [v5.0.1](https://github.com/buildkite/elastic-ci-stack-for-aws/compare/v5.0.0...v5.0.1) (2020-11-09)
+
+### Fixed
+
+* Retreive agent token from parameter store on windows agents [#762](https://github.com/buildkite/elastic-ci-stack-for-aws/pull/762) ([chrisfowles](https://github.com/chrisfowles))
+
 ## [v5.0.0](https://github.com/buildkite/elastic-ci-stack-for-aws/compare/v4.5.0...v5.0.0) (2020-10-26)
 
 ### Added