Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 7 to 8.
- vLLM version: v0.16.0
- vLLM main:
15d76f74e2
Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>