feat: add ruleset option do_not_enforce_on_create

[MattMencel]

Optional attribute added to rules.required_status_checks.

Depends on google/go-github#3245. It was just released in v65.0.0.

Resolves #2360

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Before the change?

• The option to allow repositories and branches to be created if a check would otherwise prohibit it, was not available.

After the change?

• The option to allow repositories and branches to be created if a check would otherwise prohibit it, is available through the provider.

Pull request checklist

• Tests for the changes have been added (for bug fixes / features)
• Docs have been reviewed and added / updated if needed (for bug fixes / features)

Does this introduce a breaking change?

• Yes
• No

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[stevehipwell]

@kfcampbell could this get a review?

[MattMencel]

Can someone please add this to the next release, and soonish? It's been pending for several months and is a big pain point for us.

Without this, Rulesets on non-trunk branches break regularly for us. I think every time we apply Terraform, the "Do not require status checks on creation" box gets unchecked, even though it's not currently manageable from Terraform. Then, the normal workflow pattern for our devs breaks, and we have to fix it manually.

🥺 🙏

[lfventura]

This is also being a huge problem for us. It looks this PR address it for a long time but still not merged... Any news regarding it @kfcampbell ?

[lfventura]

@MattMencel I had problems building your PR, which was causing an error.

I made a new PR which I could prove the funcionality and it is working good.
As you have the same need as I do, I am putting here my PR(#2525) and while Github does not publish this officially, I have also published my version of the provider with this change... I will try to keep it updated with the origin repo until we have if official in the github provider. If you want to use it too it is this provider https://registry.terraform.io/providers/lfventura/github/latest, currently .

@kfcampbell Please advise :)