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Auto merge of #124560 - madsmtm:update-libc, r=Mark-Simulacrum
Update libc to 0.2.155
Motivation: To fix `-Zbuild-std` / Xargo for visionOS targets.
EDIT: Blocked on ~https://github.com/rust-lang/libc/issues/3608 / https://github.com/rust-lang/libc/pull/3609~ ~https://github.com/rust-lang/libc/pull/3682 and https://github.com/rust-lang/libc/pull/3690~ No longer blocked.
