[12.x] add 'dry-run' option for schedule:run

[KIKOmanasijev]

Add --dry-run Option to schedule:run Command

Description

This pull request introduces a --dry-run option to the php artisan schedule:run command, allowing developers to preview scheduled tasks that would run without executing them. This enhances the developer experience by providing a safe way to test and verify scheduled tasks.

Example

 php artisan schedule:run --dry-run                                                              

INFO  2025-08-03 21:47:17 Skipping ['example command'], because the scheduler is started with the dry-run option.  
INFO  2025-08-03 21:47:22 Skipping ['example command'], because the scheduler is started with the dry-run option.  
INFO  2025-08-03 21:47:27 Skipping ['example command'], because the scheduler is started with the dry-run option.  

[taylorotwell]

You can use schedule:list to see if something is due "now".