feat(arm): PostgreSQLServerPublicAccessDisabled

[shoshiGit]

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Description

We converted the check PostgreSQLServerPublicAccessDisabled from TERRAFORM language to the ARM language so that it also works on resources that are defined in the ARM language.

Fixes # (issue)

New/Edited policies (Delete if not relevant)

Description

Ensure that PostgreSQL server disables public network access.

Fix

The issue can be resolved by setting the public_network_access_enabled property to false for the Azure PostgreSQL server resource in the ARM template, ensuring that public network access is disabled.

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [x] I have added tests that prove my feature, policy, or fix is effective and works
• [x] New and existing tests pass locally with my changes
• [ ] Any dependent changes have been merged and published in downstream modules