Update CHANGELOG for v1.2.86

***NO_CI***

Author: nfbot

CHANGELOG.md

@@ -2,7 +2,15 @@
 
 ## [**Changes available only in 'Preview' NuGet packages:**](https://github.com/nanoframework/nanoframework.MagicBit/tree/HEAD)
 
-[Full Changelog](https://github.com/nanoframework/nanoframework.MagicBit/compare/v1.2.82...HEAD)
+[Full Changelog](https://github.com/nanoframework/nanoframework.MagicBit/compare/v1.2.84...HEAD)
+
+**Documentation and other chores:**
+
+- Update 1 NuGet dependencies [\#157](https://github.com/nanoframework/nanoFramework.MagicBit/pull/157)
+
+## [v1.2.84](https://github.com/nanoframework/nanoframework.MagicBit/tree/v1.2.84) (2023-08-17)
+
+[Full Changelog](https://github.com/nanoframework/nanoframework.MagicBit/compare/v1.2.82...v1.2.84)
 
 **Documentation and other chores:**