chore/bump valgrind codspeed

[adriencaccia]

• feat: bump valgrind-codspeed to 3.26.0-0codspeed1
• chore: Release codspeed-runner version 4.16.2-alpha.1 🎉

[codspeed-hq]

Merging this PR will not alter performance

⚠️ Unknown Walltime execution environment detected

Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.

For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.

✅ 7 untouched benchmarks

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_{Comparing chore/bump-valgrind-codspeed (260d13d) with main (9afaef7)}