Bump actions/download-artifact from 4 to 7 (#25)

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 4 to 7.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v4...v7)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/release.yml

@@ -210,11 +210,11 @@ jobs:
       - name: Build release object
         run: pip install PyYAML>=6.0.2 && python release.py
       - name: Download Helm chart
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v7
         with:
           name: helm-chart
       - name: Download SBOMs
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v7
         with:
           pattern: sbom-*
           merge-multiple: true

.github/workflows/run-test.yml

@@ -212,12 +212,12 @@ jobs:
         with:
           fetch-depth: 0
       - name: Download backend coverage
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v7
         with:
           name: pytest-coverage-py3.12
           path: coverage-backend
       - name: Download frontend coverage
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v7
         with:
           name: frontend-coverage
           path: coverage-frontend