Revert "Releasing version 1.2.0"

This reverts commit e975e92.

The release itself isn't reverted; just the erroneous date update to CHANGELOG.md.

Author: cwaldren-ld

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 All notable changes to the LaunchDarkly Lua Server-side SDK will be documented in this file. This project adheres to [Semantic Versioning](http://semver.org).
 
-## [1.2.0] - 2022-02-08
+## [1.2.0] - 2022-02-07
 ### Added:
 - Added `version()` function to retrieve SDK version