feat: also save the lower and upper fences in the json data

[art049]

No description provided.

[codspeed-hq]

CodSpeed Performance Report

Merging #46 will improve performances by 2.44%

_{Comparing cod-218-send-the-lower-and-upper-fence-in-the-data-reporting (261e5eb) with master (e3e5ee8)}

Summary

⚡ 1 improvements
✅ 47 untouched benchmarks

Benchmarks breakdown

	Benchmark	master	cod-218-send-the-lower-and-upper-fence-in-the-data-reporting	Change
⚡	test_recursive_cached_fibo_100	203 µs	198.1 µs	+2.44%