chore: cleanup deps

[maksymar]

This PR uses a single source of serde version for all examples.

[github-actions]

canbench 🏋 (dir: .) 35b78a3 2025-05-21 09:06:15 UTC

✅ ./canbench_results.yml is up to date
📦 canbench_results_benchmark.csv available in artifacts

---------------------------------------------------

Summary:
  instructions:
    status:   No significant changes detected 👍
    counts:   [total 304 | new 0 | improved 0 | regressed 0 | unchanged 304]
    change:   [min 0 | med 0 | max 0]
    change %: [min 0.00% | med 0.00% | max 0.00%]

  heap_increase:
    status:   No significant changes detected 👍
    counts:   [total 304 | new 0 | improved 0 | regressed 0 | unchanged 304]
    change:   [min 0 | med 0 | max 0]
    change %: [min 0.00% | med 0.00% | max 0.00%]

  stable_memory_increase:
    status:   No significant changes detected 👍
    counts:   [total 304 | new 0 | improved 0 | regressed 0 | unchanged 304]
    change:   [min 0 | med 0 | max 0]
    change %: [min 0.00% | med 0.00% | max 0.00%]

---------------------------------------------------
CSV results saved to canbench_results.csv