Fix required workflows for organization rulesets

[o-sama]

Resolves #2113

---

Before the change?

• When you apply the Terraform plan, you have the following: "required_workflows": [] in state. This happens because there was no code that flattens this specific rule.

After the change?

• Added the required code to flatten this rule when flattening the ruleset's rules. When you apply the Terraform plan, you have the following in state if successful:

                "required_workflows": [
                  {
                    "required_workflow": [
                      {
                        "path": "<PATH>",
                        "ref": "<REF>",
                        "repository_id": <REPO_ID>
                      }
                    ]
                  }
                ]

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?

Please see our docs on breaking changes to help!

• Yes
• No

---

[kfcampbell]

Can you remove this before we merge?

[kfcampbell]

How might this behavior be unit tested?

[ihor-hrytskiv]

I do the same in my PR and also fix required_code_scanning

[ihor-hrytskiv]

Suggested change

	rulesMap[v.Type] = []map[string]interface{}{rule}
	rulesMap["required_workflows"] = []map[string]interface{}{rule}

you cannot use "v.Type" because it is named required_workflows in the scheme, not workflows. Look in my PR, I also add "do_not_enforce_on_create" to the scheme

[github-actions]

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