fix: try to fix "Stage npm package" step in ci.yml (#15092)

Fix the CI job by updating it to use artifacts from a more recent
release (`0.115.0`) instead of the existing one (`0.74.0`).

This step in our CI job on PRs started failing today:


https://github.com/openai/codex/blob/334164a6f714c171bb9f6440c7d3cd04ec04d295/.github/workflows/ci.yml#L33-L47

I believe it's because this test verifies that the "package npm" script
works, but we want it to be fast and not wait for binaries to be built,
so it uses a GitHub workflow that's already done. Because it was using a
GitHub workflow associated with `0.74.0`, it seems likely that
workflow's history has been reaped, so we need to use a newer one.