Ab37721 KV Update Effect Names and Initial updates to support policy versioning

[Springstone]

Overview/Summary

This pull request includes several updates and improvements to the policy definitions and templates for Azure Landing Zones. The changes primarily focus on updating policy versions, improving display names for policy parameters, and fixing deployment issues.

Policy Updates and Improvements:

• Updated the display name of the Effect parameters to clearly identify the policy it applies to in the initiative Enforce recommended guardrails for Azure Key Vault. [1] [2] [3] [4] [5] [6] [7] [8]
• Updated policy and policySet definition API version to 2023-04-01 to support policy versioning. [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19]

Bug Fixes:

• Fixed a Portal Accelerator bug that results in failed deployment when choosing not to deploy policies to the Identity management group.
• Updated the visibility condition in eslz-portal.json to remove the dependency on the identity step.

Version Updates:

• Updated bicep version and template hash in policies.json.

These changes improve the clarity, functionality, and compatibility of the policy definitions and templates used in Azure Landing Zones.

Addresses AB#37721