Update CHANGELOG for v2022.12.1

Author: andyleejordan

CHANGELOG.md

@@ -1,5 +1,15 @@
 # PowerShell Extension Release History
 
+## v2022.12.1
+### Thursday, December 15, 2022
+
+#### [vscode-powershell](https://github.com/PowerShell/vscode-powershell)
+
+
+#### [PowerShellEditorServices](https://github.com/PowerShell/PowerShellEditorServices) v3.7.1
+
+- 🐛 🚂 [vscode-powershell #4212](https://github.com/PowerShell/PowerShellEditorServices/pull/1970) - Fix `ShowHelpHandler` by running with `RequiresForeground`.
+
 ## v2022.12.1-preview
 ### Monday, December 12, 2022