CKV_AZURE_15 should allow v1.3

[ReneRebsdorf]

Describe the issue

The check expects TLS 1.2 and labels it as the "latest version".
This is however not the case, as the latest version of TLS is v1.3

Examples

Cut from bicep:

Microsoft.Web/sites@2024-04-01
The property: properties.siteConfig.minTlsVersion

Expects the value: '1.2'

Version (please complete the following information):

• 3.2.357

Additional context

N/A