Update to latest GitHub issue search API #15
Description
Expected Behavior
The action runs without deprecation warnings. Currently, this is the output I see:
[@octokit/request] "GET https://api.github.com/search/issues?q=is%3Apr%20is%3Amerged%20author%3ACopilot%20repo%3AOrchardCMS%2FOrchardCore" is deprecated. It is scheduled to be removed on Thu, 04 Sep 2025 00:00:00 GMT. See https://github.blog/changelog/2025-03-06-github-issues-projects-api-support-for-issues-advanced-search-and-more/
Possible Solution
Reading through the linked blog post I'm not actually sure what will be removed. Because it seems to me that the above query will remain supported.
Additional Context
Here's an example run that exhibits the deprecation notice: https://github.com/OrchardCMS/OrchardCore/actions/runs/16973123330/job/48115053687