Auto merge of #12436 - loongarch-rs:bump-rustix, r=weihanglo

Update rustix to 0.38.6

### What does this PR try to resolve?

Resolve build breaks for LoongArch: rust-lang/rust#114364

### How should we test and review this PR?

```bash
cargo build --target=loongarch64-unknown-linux-gnu
```

### Additional information

None

Author: bors