Bump actions/download-artifact from 4 to 5

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 4 to 5.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v4...v5)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/cloud-tests.yaml

@@ -292,7 +292,7 @@ jobs:
     if: always()
     steps:
     - name: Download test results
-      uses: actions/download-artifact@v4
+      uses: actions/download-artifact@v5
       with:
         pattern: cloud-test-results-*
         merge-multiple: true

.github/workflows/publish.yaml

@@ -485,7 +485,7 @@ jobs:
       pull-requests: write # Required to write comments
     steps:
       - name: Download test results
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
         with:
           pattern: test-results-*
           merge-multiple: true