New client version awareness

[DeanGross144]

Please update the documentation to provide some information about how we will be informed that a new version of the GSA client is available for deployment.
Add guidance about how to deploy the update most efficiently using Intune.

[wUEZRs]

My wishes as a customer:

• Documentation/Client download page should link to "What's new" patch notes
• Client Download page should list the version for download
• Guidance for Intune is already in https://microsoft.github.io/GlobalSecureAccess/Pre-requisites/DeployClient but if not easily found it should then also list this on the Client download page