fix(prism): avoid requiring full laravel framework

[MiddleSokilAI]

Problem

prism-php/prism currently requires the full laravel/framework package at runtime. Packages that only need Prism through laravel/ai then install the complete Laravel framework even when the host application already provides the required Illuminate components.

Change Summary

• Replace the broad laravel/framework runtime requirement with the concrete Illuminate components used by src/.
• Keep Laravel 11, 12, and 13 compatibility ranges aligned with the previous framework constraint.
• Leave dev/test dependencies unchanged.

Validation

• Parsed composer.json successfully with PowerShell ConvertFrom-Json.
• Ran git diff --check successfully.
• Reviewed src/ Illuminate namespace usage against the listed component packages.

Risk

Low-to-medium. This changes dependency metadata only, but consumers relying on Prism to implicitly install unrelated Laravel framework classes may need to require those packages directly.