Create an issue on each user/org repository that is not a fork and has issues enabled

createIssueViaPostman.js

//Request the user/org repositories, and add this script to tests tab of the request
//Repositories of a specific user: https://api.github.com/users/{{username}}/repos
//Repositories of a specific org: https://api.github.com/orgs/{{org}}/repos

const ghToken = pm.globals.get("GH_PAT");
const authorizationHeader = `Authorization: Bearer ${ghToken}`;

const issueTitle = "Issue title";
const issueBody = "Issue body";

const repositories = pm.response.json();

for (let i = 0; i < repositories.length; i++) {
    const repository = repositories[i];
    if (!repository.has_issues || repository.fork) {
        continue;
    }
    const createIssue = `https://api.github.com/repos/${repository.full_name}/issues`;
    pm.sendRequest(
        {
          url: createIssue,
          method: "POST",
          header: authorizationHeader,
          body: JSON.stringify({
            title: issueTitle,
            body: issueBody
          }),
        },
        function (err, res) {
          console.log(res);
        }
      );
}