Update CHANGELOG.md

Author: gcampbell-msft

CHANGELOG.md

@@ -1,6 +1,14 @@
 # What's New?
 
-## 1.18
+## 1.18.42
+
+Bug Fixes:
+
+- Fix schema validation for `$schema`. [#3809](https://github.com/microsoft/vscode-cmake-tools/pull/3809)
+- Fix tests having too long of a command-line. [#3814](https://github.com/microsoft/vscode-cmake-tools/pull/3814)
+
+## 1.18.41
+
 Features:
 
 - Add the possibility to open the current build directory in the Explorer [#1451](https://github.com/microsoft/vscode-cmake-tools/issues/1451)