gnu: epiphany: Update to 3.28.3.1 [fixes CVE-2018-{11396,12016}].

* gnu/packages/gnome.scm (epiphany): Update to 3.28.3.1.

gnu/packages/gnome.scm

@@ -4191,7 +4191,7 @@ a secret password store, an adblocker, and a modern UI.")
 (define-public epiphany
   (package
     (name "epiphany")
-    (version "3.28.2.1")
+    (version "3.28.3.1")
     (source (origin
               (method url-fetch)
               (uri (string-append "mirror://gnome/sources/" name "/"
@@ -4199,7 +4199,7 @@ a secret password store, an adblocker, and a modern UI.")
                                   name "-" version ".tar.xz"))
               (sha256
                (base32
-                "0ba0qqsbg3cv1k1pcj971y7l8kqib5l7kbr743x9a7hbmkqfk95s"))))
+                "1xz6xl6b0iihvczyr0cs1z5ifvpai6anb4m0ng1caiph06klc1b9"))))
 
     (build-system meson-build-system)
     (arguments