Bump actions/download-artifact from 4.1.4 to 6.0.0

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 4.1.4 to 6.0.0.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v4.1.4...v6.0.0)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: 6.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/unit-test.yml

@@ -54,7 +54,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4.1.5
 
-      - uses: actions/download-artifact@v4.1.4
+      - uses: actions/download-artifact@v6.0.0
         with:
           name: Test-Coverage