Add Aspire 13.2.1 release notes to the 13.2 what's-new doc#630

Copilot wants to merge 2 commits intomainmicrosoft/aspire.dev:mainfrom

copilot/add-13-2-1-release-notesmicrosoft/aspire.dev:copilot/add-13-2-1-release-notesCopy head branch name to clipboard