Build/Test Tools: Use issues instead of issuesAndPullRequests.

The `github.rest.search.issuesAndPullRequests()` method is deprecated and slated to be removed in September 2025.

The preferred way to search for pull requests is now to use `github.rest.search.issues` in combination with the `is:pr` or `type:pr` qualifiers.

Props abcd95.
Fixes #63278.

git-svn-id: https://develop.svn.wordpress.org/trunk@60314 602fd350-edb4-49c9-b593-d223f7449a82

Author: desrosj

.github/workflows/reusable-cleanup-pull-requests.yml

@@ -57,7 +57,7 @@ jobs:
               const tracTicketUrl = `https://core.trac.wordpress.org/ticket/${ ticket }`;
               const corePrefix = `Core-${ ticket }`;
               const query = `is:pr is:open repo:${ context.repo.owner }/${ context.repo.repo } in:body ${ tracTicketUrl } OR ${ corePrefix }`;
-              const result = await github.rest.search.issuesAndPullRequests({ q: query });
+              const result = await github.rest.search.issues({ q: query });
 
               prNumbers = prNumbers.concat(result.data.items.map(pr => pr.number));
             }