Update `README.md` and `metadata.json` for v7.2.18 and v7.4.1 releases#21044

daxian-dbw merged 1 commit intoPowerShell:masterPowerShell/PowerShell:masterfrom

daxian-dbw:v7.2.18-docdaxian-dbw/PowerShell:v7.2.18-docCopy head branch name to clipboard