build(deps): bump @actions/artifact from 2.1.4 to 2.1.5 (#285)

Bumps [@actions/artifact](https://github.com/actions/toolkit/tree/HEAD/packages/artifact) from 2.1.4 to 2.1.5.
- [Changelog](https://github.com/actions/toolkit/blob/main/packages/artifact/RELEASES.md)
- [Commits](https://github.com/actions/toolkit/commits/HEAD/packages/artifact)

---
updated-dependencies:
- dependency-name: "@actions/artifact"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]