Updated CHANGELOG.md for 1.20.51 release

Author: bUnitBot

CHANGELOG.md

@@ -7,6 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.20.52] - 2021-04-24
 
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@@ -192,7 +193,9 @@ more of that
 
 -   Something was added.
 
-[Unreleased]: https://github.com/bUnit-dev/workflows/compare/v1.20.48...HEAD
+[Unreleased]: https://github.com/bUnit-dev/workflows/compare/v1.20.52...HEAD
+
+[1.20.52]: https://github.com/bUnit-dev/workflows/compare/v1.20.48...v1.20.52
 
 [1.20.48]: https://github.com/bUnit-dev/workflows/compare/v1.20.45...v1.20.48