chore: downgrade to libc@0.2.174 (#15851)

### What does this PR try to resolve?

There is incompatibility between rustix@1.0.8 and libc@0.2.175 that
leads to compilation errors.

See

* bytecodealliance/rustix#1496
* rust-lang/rust#145478 (comment)

### How to test and review this PR?

In rust-lang/rust, update the `src/tools/cargo` submodule accordingly,
and run

```
cargo run --manifest-path src/ci/citool/Cargo.toml run-local dist-loongarch64-musl
```

With this downgrade it should compile.

Author: ehuss

Cargo.lock

@@ -64,7 +64,7 @@ itertools = "0.14.0"
 jiff = { version = "0.2.15", default-features = false, features = [ "std" ] }
 jobserver = "0.1.33"
 lazycell = "1.3.0"
-libc = "0.2.175"
+libc = "0.2.174" # Please ensure in lockfile it stays as 0.2.174 until bytecodealliance/rustix#1496 resolved
 libgit2-sys = "0.18.2"
 libloading = "0.8.8"
 memchr = "2.7.5"