gnu: postgresql: Update to 9.5.2. [fixes CVE-2016-2193, CVE-2016-3065]

* gnu/packages/databases.scm (postgresql): Update to 9.5.2.

gnu/packages/databases.scm

@@ -274,14 +274,14 @@ as a drop-in replacement of MySQL.")
 (define-public postgresql
   (package
     (name "postgresql")
-    (version "9.5.1")
+    (version "9.5.2")
     (source (origin
               (method url-fetch)
-              (uri (string-append "http://ftp.postgresql.org/pub/source/v"
+              (uri (string-append "https://ftp.postgresql.org/pub/source/v"
                                   version "/postgresql-" version ".tar.bz2"))
               (sha256
                (base32
-                "1ljvijaja5zy4i5b1450drbj8m3fcm3ly1zzaakp75x30s2rsc3b"))))
+                "0hbwwhh0pz0a6vf8j5bskiq7gmz9rwc9ywcqyhg5asshckj35lgq"))))
     (build-system gnu-build-system)
     (arguments
      `(#:phases