Recently had this issue…. i was able to get to the specified URI via the browser with no issue.
Came across this post – https://techcommunity.microsoft.com/t5/windows-powershell/failed-downloading-az-and-other-modules-for-powershell/m-p/1292985 and this command fixed it for me
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12Apparently support for older protocols was dropped in April 2020
While i agree with the move – its just a bit frustrating that, by the nature of the change, the site cant communicate the new requirement back.