Closes #2063

[yeruchomWhale]

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Summary of Changes

Hello @yeruchomWhale, I'm Gemini Code Assist[^1]! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request enhances the user authentication module by exposing the passwordUpdatedAt timestamp. This allows applications to retrieve and utilize information about when a user's password was last changed, which can be valuable for security auditing and user management. The changes involve updating data structures to accommodate this new field, implementing its integration into the UserMetadata class, and adding thorough unit tests to ensure its correct functionality and reliability.

Highlights

• API Enhancement: Added a new passwordUpdatedAt field to the GetAccountInfoUserResponse interface, allowing the API to return the timestamp of the last password update.
• User Metadata: Introduced a passwordUpdatedAt readonly property to the UserMetadata class, making this information accessible to consumers of the SDK.
• Serialization: Ensured the passwordUpdatedAt property is correctly serialized when UserMetadata objects are converted to JSON.
• Unit Testing: Added comprehensive unit tests for the UserMetadata.passwordUpdatedAt property, covering its correct parsing from API responses and proper handling of cases where the field is not provided.

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[yeruchomWhale]

@lahirumaramba would you be please be able to review? thanks!