gnu: PostgreSQL: Update to 10.7.

* gnu/packages/databases.scm (postgresql): Update to 10.7.

gnu/packages/databases.scm

@@ -687,14 +687,14 @@ as a drop-in replacement of MySQL.")
 (define-public postgresql
   (package
     (name "postgresql")
-    (version "10.6")
+    (version "10.7")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://ftp.postgresql.org/pub/source/v"
                                   version "/postgresql-" version ".tar.bz2"))
               (sha256
                (base32
-                "0jv26y3f10svrjxzsgqxg956c86b664azyk2wppzpa5x11pjga38"))
+                "1piyfcrcqscjhnnwn91kdvr764s7d0qz4lgygf9bl6qc71ji1vdz"))
               (patches (search-patches "postgresql-disable-resolve_symlinks.patch"))))
     (build-system gnu-build-system)
     (arguments