Update ValidateSet for Set-AzWebApp and other WebApp commands to include TLS 1.3

[avenski-ecovadis]

Description

Currently you can only provide values 1.0-1.2.
Please add a new value to a validateset: 1.3

Issue script & Debug output

Set-AzWebApp: Cannot validate argument on parameter 'MinTlsVersion'. The argument "1.3" does not belong to the set "1.0,1.1,1.2" specified by the ValidateSet attribute. Supply an argument that is in the set and then try the command again.

Environment data

Name                           Value
----                           -----
PSVersion                      7.5.1
PSEdition                      Core
GitCommitId                    7.5.1
OS                             Microsoft Windows 10.0.22631
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

Module versions

ModuleType Version    PreRelease Name                                PSEdition ExportedCommands
---------- -------    ---------- ----                                --------- ----------------
Script     14.0.0                Az                                  Core,Desk

Error output

[microsoft-github-policy-service]

Thanks for the feedback! We are routing this to the appropriate team for follow-up. cc @antcp, @AzureAppServiceCLI.

[isra-fel]

Better to use argument completer instead of validation set for future proof

[microsoft-github-policy-service]

Thanks for the feedback! We are routing this to the appropriate team for follow-up. cc @antcp, @AzureAppServiceCLI.