ci: debug lychee cache

[davidhewitt]

Will try to figure out why all netlify-build jobs are red...

[codspeed-hq]

Merging this PR will not alter performance

✅ 105 untouched benchmarks
⏩ 1 skipped benchmark¹

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_{Comparing davidhewitt:lychee-cache (6729f61) with main (4712a0a)}

Footnotes

1. 1 benchmark was skipped, so the baseline result was used instead. If it was deleted from the codebase, click here and archive it to remove it from the performance reports. ↩

[davidhewitt]

It looks like lychee 0.24 has stopped caching errors by design, so this is now fixed. 🎉