rtl_433: 18.05 -> 18.12

Semi-automatic update generated by
https://github.com/ryantm/nixpkgs-update tools. This update was made
based on information from
https://repology.org/metapackage/rtl_433/versions

pkgs/applications/misc/rtl_433/default.nix

@@ -1,14 +1,14 @@
 { stdenv, fetchFromGitHub, autoreconfHook, pkgconfig, libusb1, rtl-sdr }:
 stdenv.mkDerivation rec {
 
-  version = "18.05";
+  version = "18.12";
   name = "rtl_433-${version}";
 
   src = fetchFromGitHub {
     owner = "merbanan";
     repo = "rtl_433";
-    rev = "18.05";
-    sha256 = "0vfhnjyrx6w1m8g1hww5vdz4zgdlhcaps9g0397mxlki4sm77wpc";
+    rev = "18.12";
+    sha256 = "0y73g9ffpsgnmfk8lbihyl9d1fd9v91wsn8k8xhsdmgmn4ra1jk5";
   };
 
   nativeBuildInputs = [ autoreconfHook pkgconfig ];