feat: add Laravel 13 support

[shavonn]

No description provided.

[Copilot]

Pull request overview

This PR updates the package metadata and CI configuration to declare and validate compatibility with Laravel 13.

Changes:

• Extend Composer constraints to allow illuminate/* v13 and orchestra/testbench v11.
• Expand the GitHub Actions test matrix to run against Laravel 13 (excluding PHP 8.2).
• Update README requirements to mention Laravel 13 (plus small formatting edits).

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
README.md	Documents Laravel 13 support in requirements and adjusts Inertia section formatting/examples.
composer.json	Allows Laravel/Illuminate v13 and Testbench v11 for development/testing.
.github/workflows/tests.yml	Adds Laravel 13 to the CI matrix and excludes the known-incompatible PHP 8.2 combo.

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[Copilot]

The Requirements section now lists Laravel 13 support, but it still states "PHP 8.2+" without clarifying that Laravel 13 is not compatible with PHP 8.2 (the CI matrix explicitly excludes PHP 8.2 + Laravel 13). Consider updating the requirement wording to reflect the effective minimum PHP version per Laravel major (e.g., PHP 8.2+ for Laravel 11/12, PHP 8.3+ for Laravel 13) so users aren’t misled.

[Copilot]

Minor wording: "Laravel 11 or 12 or 13" reads awkwardly in documentation. Consider rephrasing to "Laravel 11, 12, or 13" (or "Laravel 11–13") for clarity.

Suggested change

	- Laravel 11 or 12 or 13
	- Laravel 11, 12, or 13