chore: bump robinraju/release-downloader from 1.7 to 1.8 (#6245)

Bumps [robinraju/release-downloader](https://github.com/robinraju/release-downloader) from 1.7 to 1.8.
- [Release notes](https://github.com/robinraju/release-downloader/releases)
- [Commits](https://github.com/robinraju/release-downloader/compare/v1.7...v1.8)

---
updated-dependencies:
- dependency-name: robinraju/release-downloader
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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