gnu: Add rust-gjson-0.8.

* gnu/packages/crates-io.scm (rust-gjson-0.8): New variable.
(rust-gjson-0.7): Inherit from above.

gnu/packages/crates-io.scm

@@ -21663,8 +21663,27 @@ reading and writing git repositories.")
 libcurl, which is intended to be used with the @code{git2} crate.")
     (license (list license:expat license:asl2.0))))
 
+(define-public rust-gjson-0.8
+  (package
+    (name "rust-gjson")
+    (version "0.8.0")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (crate-uri "gjson" version))
+       (file-name (string-append name "-" version ".tar.gz"))
+       (sha256
+        (base32 "164nwjx81j8cnnvi63h0dcxdc9ib3s0k9wx15l72hxp4vklx16a5"))))
+    (build-system cargo-build-system)
+    (arguments `(#:skip-build? #t))
+    (home-page "https://github.com/tidwall/gjson.rs")
+    (synopsis "JSON parser for Rust")
+    (description "Gjson is a JSON parser for Rust.")
+    (license license:expat)))
+
 (define-public rust-gjson-0.7
   (package
+    (inherit rust-gjson-0.8)
     (name "rust-gjson")
     (version "0.7.5")
     (source
@@ -21674,12 +21693,7 @@ libcurl, which is intended to be used with the @code{git2} crate.")
        (file-name (string-append name "-" version ".tar.gz"))
        (sha256
         (base32 "0vhary4ha77scriaw6r4nv16ha9pfzirm84sjc240csqwb542p10"))))
-    (build-system cargo-build-system)
-    (arguments `(#:skip-build? #t))
-    (home-page "https://github.com/tidwall/gjson.rs")
-    (synopsis "JSON parser for Rust")
-    (description "Gjson is a JSON parser for Rust.")
-    (license license:expat)))
+    (arguments `(#:skip-build? #t))))
 
 (define-public rust-glam-0.17
   (package