Update CHANGELOG for v1.0.0

***NO_CI***

Author: nfbot

CHANGELOG.md

@@ -2,7 +2,15 @@
 
 ## [**Changes available only in 'Preview' NuGet packages:**](https://github.com/nanoframework/nanoFramework.Logging/tree/HEAD)
 
-[Full Changelog](https://github.com/nanoframework/nanoFramework.Logging/compare/v1.0.0-preview.46...HEAD)
+[Full Changelog](https://github.com/nanoframework/nanoFramework.Logging/compare/v1.0.0-preview.48...HEAD)
+
+**Documentation and other chores:**
+
+- Update 4 NuGet dependencies [\#20](https://github.com/nanoframework/nanoFramework.Logging/pull/20)
+
+## [v1.0.0-preview.48](https://github.com/nanoframework/nanoFramework.Logging/tree/v1.0.0-preview.48) (2021-05-19)
+
+[Full Changelog](https://github.com/nanoframework/nanoFramework.Logging/compare/v1.0.0-preview.46...v1.0.0-preview.48)
 
 **Documentation and other chores:**