Symfony version(s) affected: 5.0

Description
I've implemented a process runner command. While in documentation for symfony/process is shown int data type, the method signature requires nullable float.

Possible Solution

1. Either update documentation to specify to use float values (e.g.: 3600.0)
2. Either change type hinting from ?float to ?int

Since it's about to be timeout in seconds, I'd go with int, but float brings the flexibility for some cases in which someone wants to put, let's say, 30.5 seconds timeout.