Changelog for 1.21.0 (#1828)
Changelog for 1.21.0 (#1828)

* Changelog for 1.21.0

* update with last 3 commits

* add new PR that fixed minimum PowerShell version

* Update CHANGELOG.MD

* Update CHANGELOG.MD

* Update CHANGELOG.MD

* Update CHANGELOG.MD

* Update CHANGELOG.MD

* Update CHANGELOG.MD
PowerShell/PSScriptAnalyzer