Add Laravel 13 support

[bradenkeith]

Summary

• Widen illuminate/contracts, illuminate/database, and illuminate/support constraints from ^12.0 to ^12.0|^13.0
• Widen orchestra/testbench dev dependency from ^10.0 to ^10.0|^11.0

Test plan

• Verify existing tests pass against Laravel 12
• Verify package installs cleanly in a Laravel 13 project

🤖 Generated with Claude Code

[greptile-apps]

Greptile Summary

This PR adds Laravel 13 compatibility to the romegasoftware/availability package by widening the version constraints on illuminate/contracts, illuminate/database, and illuminate/support from ^12.0 to ^12.0|^13.0, and expanding the orchestra/testbench dev dependency from ^10.0 to ^10.0|^11.0 (testbench 11.x is the correct companion for Laravel 13).

• All three Illuminate component constraints are widened consistently
• The orchestra/testbench ^11.0 mapping to Laravel 13 is correct
• The existing PHP ^8.4 constraint is compatible with Laravel 13's minimum requirements
• No CI workflow exists in the repo, so no pipeline matrix needs updating
• The README.md does not advertise a specific supported Laravel version range, so no documentation update is needed

Confidence Score: 5/5

• This PR is safe to merge — it is a minimal, correct dependency widening with no logic changes.
• The change is a single-file, purely additive version constraint update. All mappings (illuminate/* ^13.0, testbench ^11.0) are accurate for Laravel 13. No code logic was touched, no breaking changes were introduced, and backward compatibility with Laravel 12 is preserved.
• No files require special attention.

Important Files Changed

Filename	Overview
composer.json	Widens illuminate/* constraints to ^12.0

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    L12["Laravel 12"]
    L13["Laravel 13"]

    IC12["illuminate/contracts ^12.0"]
    IC13["illuminate/contracts ^13.0"]
    ID12["illuminate/database ^12.0"]
    ID13["illuminate/database ^13.0"]
    IS12["illuminate/support ^12.0"]
    IS13["illuminate/support ^13.0"]

    TB10["orchestra/testbench ^10.0"]
    TB11["orchestra/testbench ^11.0"]

    L12 --> IC12
    L12 --> ID12
    L12 --> IS12
    L12 --> TB10

    L13 --> IC13
    L13 --> ID13
    L13 --> IS13
    L13 --> TB11

    IC12 & IC13 --> PKG["romegasoftware/availability"]
    ID12 & ID13 --> PKG
    IS12 & IS13 --> PKG
    TB10 & TB11 --> PKG

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