API - Edit Note Endpoint #18

Goal: Implement an API endpoint to edit note in an account by note id.

Background: This endpoint is important for allowing the client to edit an existing note in an account. The input parameter would be a text field.

Tasks:

• Add open api specification
• Implement sequence diagram
• Write test cases for the new endpoint.
• Implement the code as per the sequence diagram.
• Include the endpoint in the postman collection.
• Handle possible errors such as invalid input or server errors.