add publish method on phpDoc annotation on Redis Facade

[emrancu]

Added the missing PHPDoc annotation for the publish method in Illuminate\Support\Facades\Redis.

Changes:

• Added @method static void publish(string $channel, string $message) to Redis Facade.

Benefits:

• Provides better IDE autocompletion and static analysis support.
• Enhances developer experience by documenting the publish method explicitly.
• Does not introduce any breaking changes or modify existing functionality.

This update improves Laravel's developer experience by ensuring better code assistance when using Redis publish/subscribe functionality.

[crynobone]

We already have a GitHub Actions to update the facades docblock on each commit. Even if this get merged to GitHub Actions should still revert it.

[emrancu]

@crynobone It's not possible to add publish command to Redis docblock automatically. Because it call with magic __call.