[Feat] Implement Endpoint for Updating a Comment on a Blog

[YastecHub]

Description

**Closes #406 **

Changes proposed

What were you told to do?

Implement the Update Comment Endpoint to allow users to modify their own comments while enforcing authorization checks.

What did you do?

• I Create UpdateCommentDto class to structure incoming update requests.
• Created UpdateCommentCommandHandler to handle update logic.
• Added authorization checks to ensure only the comment owner can modify their comment.
• Implemented proper response handling for unauthorized access (403) and non-existent comments (404).
• Added a new CommentsController to handle the update logic via API endpoints.
• Added unit tests in UpdateCommentCommandShould.cs to verify different cases.
• Added an UpdatedAt column to track when a comment is modified.

Check List (Check all the applicable boxes)

🚨Please review the contribution guideline for this repository.

• My code follows the code style of this project.
• This PR does not contain plagiarized content.
• The title and description of the PR is clear and explains the approach.
• I am making a pull request against the dev branch (left side).
• My commit messages styles matches our requested structure.
• My code additions will fail neither code linting checks nor unit test.
• I am only making changes to files I was requested to.

Screenshots/Vi

deos

[Heba-WebDev]

Looks good to me

[Fabito97]

Yes, this is good.