Bump actions/download-artifact from v2.0.8 to v2.0.9
Bump actions/download-artifact from v2.0.8 to v2.0.9

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from v2.0.8 to v2.0.9.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](https://github.com/actions/download-artifact/compare/v2.0.8...158ca71f7c614ae705e79f25522ef4658df18253)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
scalameta/scalafmt,scalameta/scalafmt,scalameta/scalafmt,scalameta/scalafmt