bors cd434309ef Auto merge of #144997 - BoxyUwU:bootstrap_bump, r=Mark-Simulacrum
bump bootstrap compiler to 1.90 beta

There were significantly less `cfg(bootstrap)` and `cfg(not(bootstrap))` this release. Presumably due to the fact that we change the bootstrap stage orderings to reduce the need for them and it was successful 🙏
2025-08-07 10:56:05 +00:00
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