Auto merge of #153463 - cuviper:beta-next, r=cuviper

[beta] update stage0 and cargo

Update stage0 to 1.94.0

<https://forge.rust-lang.org/release/process.html#beta-stage0-update-friday>

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Update cargo submodule #153515

2 commits in f298b8c82da0cba538516b45b04a480fc501d4c0..e8eb8435d5cad936237a1ee798c2f983624d0825
2026-02-24 21:59:20 +0000 to 2026-03-06 12:51:00 -0600
- [beta-1.95] Add missing truncate when writing .crate files (rust-lang/cargo#16713)
- [beta 1.95] backport test fixes (rust-lang/cargo#16715)

Author: bors