add breaking change pre-announcements for StackHCIVM SecureString par…#29332

NoriZC merged 2 commits intoAzure:mainAzure/azure-powershell:mainfrom

shraddhasun:users/shraddha/stackhcivm-bc-securestringshraddhasun/azure-powershell:users/shraddha/stackhcivm-bc-securestringCopy head branch name to clipboard