chore: pin exec-harness 1.4.1

[adriencaccia]

Points the runner at exec-harness v1.4.1, which sets PYTHONPERFSUPPORT in every mode (#577) so Python codspeed exec targets get Python frames in simulation-mode flamegraphs again.

Hash verified against the published installer with GITHUB_ACTIONS=true cargo test all_pinned.

Refs COD-3821, which stays open for the runner v5.4.2 release this unblocks.

[greptile-apps]

Confidence Score: 5/5

[High impact] This pin update appears safe to merge.

Summary

Updates the runner’s exec-harness pin from 1.4.0 to 1.4.1 and replaces its installer checksum.

• The matching harness release sets PYTHONPERFSUPPORT=1 in every mode so Python simulation targets can produce named frames.
• The release URL and checksum checks remain unchanged.
• No actionable issues found. Tests were not run during this review.

_{Reviews (1) · Last reviewed commit: "chore: pin exec-harness 1.4.1" · Reviewed by Greptile}

[codspeed]

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.

✅ 31 untouched benchmarks
⏩ 6 skipped benchmarks¹

---

_{Comparing cod-3821-release-exec-harness-runner (66dac6d) with main (21ffa00)}

Footnotes

1. 6 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩