Fix type case issues in KeyRotationPolicyActionType for armkeyvault package.

[nir-mo]

Purpose

This PR fixes type case issues in the KeyRotationPolicyActionType constant values within the armkeyvault package.

Background

When using the armkeyvault package to fetch Key Vault key rotation policy details, the type case mismatch in KeyRotationPolicyActionType constants causes parsing issues with the Azure API response. The API returns lowercase values while the SDK expects title case.

Changes

• Updated KeyRotationPolicyActionType constant values to match the API response format
• Modified the case from title case (e.g., "Rotate", "Notify") to lowercase (e.g., "rotate", "notify")

Impact

This is a breaking change for any code explicitly referencing the KeyRotationPolicyActionType constants, but necessary to maintain compatibility with the Azure API responses.

• The purpose of this PR is explained in this or a referenced issue.
• The PR does not update generated files.
  • These files are managed by the codegen framework at Azure/autorest.go.
• Tests are included and/or updated for code changes.
• Updates to module CHANGELOG.md are included.
• MIT license headers are included in each file.

[github-actions]

Thank you for your contribution @nir-mo! We will review the pull request and get back to you soon.

[tadelesh]

@nir-mo thanks for your contribution. however, our sdk is auto generated from spec file: https://github.com/Azure/azure-rest-api-specs/blob/b6075dbc2321933382ea91c787ee62c6bdb87e5d/specification/keyvault/resource-manager/Microsoft.KeyVault/stable/2023-07-01/keys.json#L617-L623. could you open an issue in azure-rest-api-specs repo and let corresponding service team to fix the spec first?

[nir-mo]

Refere

@tadelesh I opened an addition PR under azure-rest-api-specs: Azure/azure-rest-api-specs#32107

Thanks