Bump actions/download-artifact from 3.0.2 to 4.0.0

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 3.0.2 to 4.0.0.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@9bc31d5...7a1cd32)

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

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

.github/workflows/tests.yaml

@@ -71,7 +71,7 @@ jobs:
           node_image: kindest/node:v${{ matrix.kind-k8s-version }}
           version: v0.20.0
 
-      - uses: actions/download-artifact@9bc31d5ccc31df68ecc42ccf4149144866c47d8a # v3.0.2
+      - uses: actions/download-artifact@7a1cd3216ca9260cd8022db641d960b1db4d1be4 # v4.0.0
         with:
           name: vault-k8s-image