Change how Github token is retrieved

[Cyberbeni]

It works fine for me without the token: https://github.com/Cyberbeni/ShowTouches/runs/1579363839?check_suite_focus=true#step:5:63

There is also this similar action that gets GITHUB_TOKEN like this: https://github.com/peter-evans/create-pull-request/blob/master/action.yml#L4-L6

Edit: it works without the token because I checked out the repo before and that also got the token the same way as the other action: https://github.com/actions/checkout/blob/main/action.yml#L12-L24

[EndBug]

Hi, thanks for the issue. I've actually noticed this too, but didn't think about it too much.
It's would be a good idea to get the token as that action does

[EndBug]

The fix has been included in v6.1.0 (also v6 and latest), thanks ❤️