gnu: zeromq: Update to 4.3.2.

* gnu/packages/networking.scm (zeromq): Update to 4.3.2.
[source](uri): Adjust accordingly.

gnu/packages/networking.scm

@@ -273,14 +273,14 @@ transparently check connection attempts against an access control list.")
 (define-public zeromq
   (package
     (name "zeromq")
-    (version "4.0.7")
+    (version "4.3.2")
     (source (origin
               (method url-fetch)
-              (uri (string-append "http://download.zeromq.org/zeromq-"
-                                  version ".tar.gz"))
+              (uri (string-append "https://github.com/zeromq/libzmq/releases"
+                                  "/download/v" version "/zeromq-" version ".tar.gz"))
               (sha256
                (base32
-                "00vvwhgcdr1lva2pavicvy92iad0hj8cf71n702hv6blw1kjj2z0"))))
+                "0qzp80ky4y2k7k1ya09v9gkivvfbz2km813snrb8jhnn634bbmzb"))))
     (build-system gnu-build-system)
     (home-page "http://zeromq.org")
     (synopsis "Library for message-based applications")