add tests

Author: Alvaro Muñoz

ql/test/query-tests/Security/CWE-829/UntrustedCheckout.expected

@@ -18,6 +18,7 @@
 | .github/workflows/issue_comment_octokit.yml:79:9:83:2 | Uses Step | Potential unsafe checkout of untrusted pull request on privileged workflow. |
 | .github/workflows/issue_comment_octokit.yml:95:9:100:2 | Uses Step | Potential unsafe checkout of untrusted pull request on privileged workflow. |
 | .github/workflows/issue_comment_octokit.yml:109:9:114:66 | Uses Step | Potential unsafe checkout of untrusted pull request on privileged workflow. |
+| .github/workflows/untrusted_checkout2.yml:14:9:19:72 | Run Step | Potential unsafe checkout of untrusted pull request on privileged workflow. |
 | .github/workflows/untrusted_checkout.yml:10:9:13:6 | Uses Step | Potential unsafe checkout of untrusted pull request on privileged workflow. |
 | .github/workflows/untrusted_checkout.yml:13:9:15:31 | Uses Step | Potential unsafe checkout of untrusted pull request on privileged workflow. |
 | .github/workflows/workflow_run_untrusted_checkout.yml:13:9:16:6 | Uses Step | Potential unsafe checkout of untrusted pull request on privileged workflow. |