CSCI-GA-2820-FA25-003/customers

AI Summary: This issue describes the implementation of a `PATCH /customers/{id}` endpoint to allow existing customers to update their profile information, including fields like first name, last name, email, address, and password. It specifies detailed validation rules for each field, defines specific HTTP status codes for success (200), conflicts (409), invalid input (400), and not found (404), and outlines the expected behavior for partial updates.