* gnu/packages/crates-io.scm (rust-publicsuffix-2): Update to 2.2.3. [arguments]: Don't skip build. [cargo-inputs]: Replace rust-hashbrown-0.11 with 0.12, rust-idna-0.2 with 0.3. Remove rust-byteorder-1. [cargo-development-inputs]: Add rust-lazy-static-1, rust-rspec-1.