Release of Microsoft.PowerShell.PSResourceGet v1.2.0-rc1

What's Changed

• WhatIf parameter should respect provided value instead of simply checking presence by Anam Navied (@anamnavi) in #1925
• Update version, changelog, release notes for 1.2.0-rc1 by Anam Navied (@anamnavi) in #1927
• Update dotnet version by Anam Navied (@anamnavi) in #1928

Full Changelog: v1.2.0-preview5...v1.2.0-rc1