Edit a Comment

[ellaharrasser]

Update an existing comment.

• [x] An authenticated user is required for a successful response
• [x] Only the creator of the comment is authorized to edit
• [x] Comment record is updated in the database after request
• [x] Comment data returned includes the id, user_id, comment, created_at, and updated_at
• [x] Error response with status 400 is given when body validations for the comment are violated
• [x] Error response with status 404 is given when a comment does not exist with the provided id