gnu: rust-rayon-1.3: Rename to rust-rayon-1.

* gnu/packages/crates-io.scm (rust-rayon-1.3): Rename to rust-rayon-1.
(rust-criterion-0.3, rust-criterion-0.2, rust-gimli-0.18,
rust-hashbrown-0.5, rust-indexmap-1.3, rust-jpeg-decoder-0.1,
rust-nasm-rs-0.1, rust-scroll-0.9, rust-syn-1.0, rust-syn-0.15)
[arguments]: Adjust accordingly.
* gnu/packages/gnome.scm (librsvg-next)[arguments]: Same.
* gnu/packages/rust-apps.scm (tokei)[arguments]: Same.
* gnu/packages/video.scm (rav1e)[arguments]: Same.