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

* gnu/packages/crates-io.scm (rust-regex-1.3): Rename to rust-regex-1.
(rust-ansi-term-0.12, rust-bindgen-0.52, rust-bindgen-0.51,
rust-bindgen-0.50, rust-bindgen-0.37, rust-bindgen-0.49, rust-clap-2,
rust-compiletest-rs-0.3, rust-console-0.9, rust-console-0.7,
rust-docopt-1.1, rust-env-logger-0.7, rust-env-logger-0.6,
rust-env-logger-0.5, rust-gimli-0.18, rust-globset-0.4,
rust-grep-cli-0.1, rust-grep-matcher-0.1, rust-grep-regex-0.1,
rust-grep-searcher-0.1, rust-ignore-0.4, rust-lalrpop-0.17,
rust-lalrpop-util-0.17, rust-locale-config-0.3, rust-localeconfig-0.2,
rust-nom-5, rust-nom-4.2, rust-once-cell-1.2, rust-proptest-0.9,
rust-proptest-0.8, rust-pulldown-cmark-0.4, rust-regex-automata-0.1,
rust-rusqlite-0.19, rust-scan-fmt-0.2, rust-syn-1.0, rust-syn-0.15,
rust-ucd-parse-0.1, rust-version-sync-0.8) [arguments]: Adjust accordingly.
* gnu/packages/gnome.scm (librsvg-next)[arguments]: Same.
* gnu/packages/rust-apps.scm (fd, ripgrep, tokei, rust-cargo-c)
[arguments]: Same.
* gnu/packages/sequoia.scm (sequoia)[arguments]: Same.