Bump actions/upload-artifact from 4 to 5 (#3786)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4 to 5.

- vLLM version: v0.11.0rc3
- vLLM main:
c9461e05a4

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

.github/workflows/_accuracy_test.yaml

@@ -176,7 +176,7 @@ jobs:
 
       - name: Upload Report
         if: ${{ inputs.upload == true }}
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: "report-${{ env.GHA_VLLM_ASCEND_VERSION }}-${{ steps.report.outputs.markdown_name }}"
           path: ./benchmarks/accuracy/${{ steps.report.outputs.markdown_name }}.md