Prepare CHANGELOG for a forthcoming 1.4.2 release

Author: apparentlymart

CHANGELOG.md

@@ -2,7 +2,6 @@
 
 * `function/stdlib`: The `jsonencode` function will now correctly accept a null as its argument, and produce the JSON representation `"null"` rather than returning an error. ([#54](https://github.com/zclconf/go-cty/pull/54))
 
-
 # 1.4.1 (March 5, 2025)
 
 * `function/stdlib`: Fix various panics related to sets with unknown element types in the set-manipulation functions. ([#52](https://github.com/zclconf/go-cty/pull/52))