Change github-pat input name

[saerosV]

What this PR does

Renames the github-pat input argument to github-token, as to better reflect the different kinds of tokens this input accepts, according to the changes made in #208.

[DuncanCasteleyn]

Since no fall back is provided this is a breaking change.

Which means workflows using @master as target will break when merged into master.

[DuncanCasteleyn]

Suggested change

	required: false
	default: ${{ github.token }}

We could add this to make the configuration even simpler, not sure if that is a good idea, but it how it's done for https://github.com/actions/checkout/blob/main/action.yml for example.

[saerosV]

@simar7 do you think this should be part of the PR? Not part of the initial goals of the PR, but I think it is a good enough improvement to add.

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
1 out of 2 committers have signed the CLA.

✅ saerosV
❌ guilherme_marz

---

guilherme_marz seems not to be a GitHub user. You need a GitHub account to be able to sign the CLA. If you have already a GitHub account, please add the email address used for this commit to your account.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}