chore(deps): update actions/upload-artifact action to v5

Author: renovate[bot]

.github/workflows/k8s-scaling-test.yml

@@ -199,7 +199,7 @@ jobs:
         run: mv ./tests/tests/autoscaling_results.md ./tests/tests/results_${{ matrix.test-strategy }}.md
       - name: Upload results
         if: always()
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: results_${{ matrix.test-strategy }}
           path: ./tests/tests/results_${{ matrix.test-strategy }}.md