[APIView] Update TLS to 1.2/1.3

APIView reports in portal that we need to update to TLS 1.2 or 1.3.

https://learn.microsoft.com/en-us/azure/app-service/overview-tls#tls-10-and-11

No timeframe is given.

Start by locating the APIView TLS configuration used by the portal, then compare its current protocol support with the linked Azure TLS guidance. Done means APIView reports and uses TLS 1.2 or 1.3; the issue does not name a file or test to run.

Written by the indexing model from the issue text.