libraw: 0.19.5 -> 0.20.0

pkgs/development/libraries/libraw/default.nix

···
 
 stdenv.mkDerivation rec {
   pname = "libraw";
-  version = "0.19.5";
+  version = "0.20.0";
 
   src = fetchurl {
     url = "https://www.libraw.org/data/LibRaw-${version}.tar.gz";
-    sha256 = "1x827sh6vl8j3ll2ihkcr234y07f31hi1v7sl08jfw3irkbn58j0";
+    sha256 = "18wlsvj6c1rv036ph3695kknpgzc3lk2ikgshy8417yfl8ykh2hz";
   };
 
   outputs = [ "out" "lib" "dev" "doc" ];