Support for Application Gateway health probes without authentication

**Tool version**
v4.3.2

**Is your feature request related to a problem? Please describe.**
I am trying to expose my Azure Naming Tool instance using an Application Gateway. The issue arises with the health probe targeting the /healthcheck/ping endpoint: it currently returns a 401 Unauthorized response because authentication is required.

**Describe the solution you'd like**
Provide a way to disable authentication specifically for the /healthcheck/ping endpoint (or similar healthcheck endpoints). This would allow external services such as Application Gateway to perform health monitoring without requiring authentication.

**Describe alternatives you've considered**
Configuring the health probe to accept a 401 status as "healthy" has been tested, but this is not a real solution — only a workaround for testing purposes.