Bump the github-actions group with 2 updates

Bumps the github-actions group with 2 updates: [actions/upload-artifact](https://github.com/actions/upload-artifact) and [actions/download-artifact](https://github.com/actions/download-artifact).


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

Updates `actions/download-artifact` from 5 to 6
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v5...v6)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
- dependency-name: actions/download-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
...

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

Author: dependabot[bot]

.github/workflows/test.yml

@@ -75,7 +75,7 @@ jobs:
           ./pytest_runner.sh
 
       - name: Upload coverage results
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: coverage-${{ matrix.python-version }}-os-${{ matrix.os }}
           path: reports/*
@@ -113,7 +113,7 @@ jobs:
         run: pip install -I -r requirements-test.txt
 
       - name: Download all coverage reports
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           path: reports/
           pattern: coverage-*