fix: allow building codspeed-rust on unsupported architectures

[art049]

Fixes build on architecture we don't support instrumentation for yet: https://github.com/astral-sh/ruff/issues/12662

[codspeed-hq[bot]]

CodSpeed Performance Report

Merging #54 will not alter performance

_{Comparing cod-180-avoid-blocking-builds-on-non-supported-architectures (7268615) with main (ed05600)}

Summary

✅ 54 untouched benchmarks