Feat/Endpoint for updating Testimonials (Authenticated users only)

[edenis00]

Description

Create an endpoint that allows authenticated users to update user testimonials, ensuring accurate and up-to-date feedback on the platform.

Related Issue (Link to issue ticket)

hngprojects#1154

Motivation and Context

This chance is requried to ensure users can be able to update their information in the testimonials. Allowing them to correct and edit testimonials.

How Has This Been Tested?

This feature has been tested using:

• Unit tests with FastAPI's TestClient using pytest
• Mocking database queries to simulate different scenarios (successful upate, unathorized access, non-existing testimonials)
• Manual testing using Postman, sending request with different authenticated states

Screenshots (if appropriate - Postman, etc):

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Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
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Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.