Upgrade Swift without upgrading MacOS X

I am currently using Mac OS Sierra 10.12.6. I cannot upgrade to a more recent OS version as the business applications I am using for WFH will not work. The default swift installed is 3.1. I want to upgrade to Swift 5 without upgrading my OS X. I cannot upgrade Xcode as it needs the latest OS X. Is there a way to install swift 5 as a standalone using homebrew or other methods?