Add Release Note (feature): The server-side component of OpenSSH, which had been shipped with Git for Windows for historical reasons only, is [now no longer distributed with it](https://github.com/git-for-windows/build-extra/pull/571).

Add Release Note (feature): The server-side component of OpenSSH, which had been shipped with Git for Windows for historical reasons only, is [now no longer distributed with it](https://github.com/git-for-windows/build-extra/pull/571). #128