Feature request: Allow run not only on pull request

[NiroHaim]

Hi, I'd just like to start by thanking you for this cool action :)

My problem

Currently when using this action on a flow that is run not on a pull request (on: [push]), I get the following error:

How I would like it to work

As a user I would like to be able to use the action in any workflow, in any case.

Example use cases:

• on: [push] I want to know if my syntax is valid before I make a pull request.
• on: workflow_call: I want to be able to use this action as a job that is always runnable. In my case, as a prerequisite for the CD.

Thanks again!