gnu: Add rust-idna-0.5.

* gnu/packages/crates-io.scm (rust-idna-0.5): New variable.
(rust-idna-0.4): Inherit from rust-idna-0.5.

Change-Id: I9b0d7bf73654cb6c481847193254f532b4dab17c

gnu/packages/crates-io.scm

@@ -37560,8 +37560,34 @@ with hyper.")
      "Utility for applying case rules to Rust identifiers.")
     (license (list license:expat license:asl2.0))))
 
+(define-public rust-idna-0.5
+  (package
+    (name "rust-idna")
+    (version "0.5.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "idna" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "1xhjrcjqq0l5bpzvdgylvpkgk94panxgsirzhjnnqfdgc4a9nkb3"))))
+    (build-system cargo-build-system)
+    (arguments
+     `(#:cargo-inputs (("rust-unicode-bidi" ,rust-unicode-bidi-0.3)
+                       ("rust-unicode-normalization" ,rust-unicode-normalization-0.1))
+       #:cargo-development-inputs (("rust-assert-matches" ,rust-assert-matches-1)
+                                   ("rust-bencher" ,rust-bencher-0.1)
+                                   ("rust-serde-json" ,rust-serde-json-1)
+                                   ("rust-tester" ,rust-tester-0.9))))
+    (home-page "https://github.com/servo/rust-url/")
+    (synopsis "Internationalizing Domain Names in Applications and Punycode")
+    (description
+     "IDNA (Internationalizing Domain Names in Applications) and Punycode.")
+    (license (list license:expat license:asl2.0))))
+
 (define-public rust-idna-0.4
   (package
+    (inherit rust-idna-0.5)
     (name "rust-idna")
     (version "0.4.0")
     (source (origin
@@ -37571,7 +37597,6 @@ with hyper.")
               (sha256
                (base32
                 "0z4i1dhqk83bbv230pp1c31dqdlnscvqxvc85n40ihgvgfqdc83x"))))
-    (build-system cargo-build-system)
     (arguments
      `(#:cargo-inputs
        (("rust-unicode-bidi" ,rust-unicode-bidi-0.3)
@@ -37580,12 +37605,7 @@ with hyper.")
        (("rust-assert-matches" ,rust-assert-matches-1)
         ("rust-bencher" ,rust-bencher-0.1)
         ("rust-serde-json" ,rust-serde-json-1)
-        ("rust-tester" ,rust-tester-0.9))))
-    (home-page "https://github.com/servo/rust-url/")
-    (synopsis "Internationalizing Domain Names in Applications and Punycode")
-    (description
-     "IDNA (Internationalizing Domain Names in Applications) and Punycode.")
-    (license (list license:expat license:asl2.0))))
+        ("rust-tester" ,rust-tester-0.9))))))
 
 (define-public rust-idna-0.3
   (package