Enable zlib-rs on all platforms

[charliermarsh]

Summary

Let's see if these build now. They failed back when we had a CMake dependency, and had to build zlib-ng.

[musicinmybrain]

Is there any reason why uv should still be falling back to rust_backend on ppc64le, s390x, and FreeBSD?

uv/crates/uv-performance-flate2-backend/Cargo.toml

Lines 10 to 14 in f4799d2

	[target.'cfg(not(any(target_arch = "s390x", target_arch = "powerpc64", target_os = "freebsd")))'.dependencies]
	flate2 = { version = "1.0.28", default-features = false, features = ["zlib-rs"] }
	[target.'cfg(any(target_arch = "s390x", target_arch = "powerpc64", target_os = "freebsd"))'.dependencies]
	flate2 = { version = "1.0.28", default-features = false, features = ["rust_backend"] }

I assumed that was due to CMake build system portability issues with the zlib-ng backend, which should be gone with the switch to zlib-rs.

[charliermarsh]

Ah no, sorry. We can probably remove that now?