fix: try to fix "Stage npm package" step in ci.yml

[bolinfest]

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:

codex/.github/workflows/ci.yml

Lines 33 to 47 in 334164a

	- name: Stage npm package
	id: stage_npm_package
	env:
	GH_TOKEN: ${{ github.token }}
	run: |
	set -euo pipefail
	# Use a rust-release version that includes all native binaries.
	CODEX_VERSION=0.74.0
	OUTPUT_DIR="${RUNNER_TEMP}"
	python3 ./scripts/stage_npm_packages.py \
	--release-version "$CODEX_VERSION" \
	--package codex \
	--output-dir "$OUTPUT_DIR"
	PACK_OUTPUT="${OUTPUT_DIR}/codex-npm-${CODEX_VERSION}.tgz"
	echo "pack_output=$PACK_OUTPUT" >> "$GITHUB_OUTPUT"

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.