Update changelog

CHANGELOG.md

 
+<a name="v3.51.1"></a>
+## [v3.51.1] - 2023-06-19
+### Bug Fixes
+- issue [#121](https://gitlab.schukai.com/oss/libraries/javascript/monster/issues/121) bug in extractKeys
+
+
 <a name="v3.51.0"></a>
 ## [v3.51.0] - 2023-06-15
 ### Changes
@@ -650,6 +656,7 @@
 <a name="1.8.0"></a>
 ## 1.8.0 - 2021-08-15
 
+[v3.51.1]: https://gitlab.schukai.com/oss/libraries/javascript/monster/compare/v3.51.0...v3.51.1
 [v3.51.0]: https://gitlab.schukai.com/oss/libraries/javascript/monster/compare/v3.50.0...v3.51.0
 [v3.50.0]: https://gitlab.schukai.com/oss/libraries/javascript/monster/compare/v3.49.0...v3.50.0
 [v3.49.0]: https://gitlab.schukai.com/oss/libraries/javascript/monster/compare/v3.48.0...v3.49.0