fix:Migrate Testimonials to UUID Primary Keys

[nyainda]

Description

Migrate the testimonials table from incremental IDs to UUID primary keys for improved security and uniqueness.

Acceptance Criteria

• Testimonials table uses UUIDs as primary keys
• Testimonial model supports UUIDs with HasUuids trait
• Migration updates the id column to UUID type
• Existing CRUD operations work with UUIDs
• Tests verify UUID generation and retrieval

Purpose

Enhances security by replacing predictable incremental IDs with random UUIDs, reducing the risk of enumeration attacks.

Requirements

• Laravel framework with MySQL
• Migration to alter table schema
• Update Testimonial model

Expected Outcome

Testimonials are identified by UUIDs (e.g., 550e8400-e29b-41d4-a716-446655440000) instead of integers (e.g., 1, 2).

Additional Context

• Part of broader testimonial system improvements
• No screenshots specific to this change yet