Update GitHub Artifact Actions

Author: renovate[bot]

.github/workflows/verify.yml

@@ -109,7 +109,7 @@ jobs:
           . venv/bin/activate
           pytest --log-level info tests/ --cov='airos/'
       - name: Upload coverage artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: coverage-${{ matrix.python-version }}
           path: .coverage
@@ -164,7 +164,7 @@ jobs:
           . venv/bin/activate
           uv pip install -r requirements.txt -r requirements-test.txt
       - name: Download all coverage artifacts
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v7
         with:
           pattern: coverage-*
           merge-multiple: true