Docs: document the PowerShellEditorServices upgrade

Author: ForNeVeR

CHANGELOG.md

@@ -6,11 +6,14 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 
 ## [Unreleased] (2.6.0)
 ### Changed
+- **Requirement update!** If you set the plugin to use PowerShell (aka PowerShell Core, as opposed to Windows PowerShell), then PowerShell 7.2.11 is the minimal supported version
+
+  The requirements related to Windows PowerShell version are not changed.
 - [#229](https://github.com/ant-druha/intellij-powershell/issues/229): the **PowerShell** run configuration will now save all the files before executing
 
   This fixes the cases when the started configuration wasn't using the latest version of an edited script file.
 - [#51: Update PowerShellEditorServices](https://github.com/ant-druha/intellij-powershell/issues/51) to v3.18.0
-
+- PowerShellEditorServices have been updated to the latest v1.22.0
 ### Removed
 - The plugin no longer bundles Plaster that was a part of an older PowerShellEditorServices distribution, even though it wasn't used by the plugin.