libaom: 3.1.3 -> 3.2.0

pkgs/development/libraries/libaom/default.nix

···
 
 stdenv.mkDerivation rec {
   pname = "libaom";
-  version = "3.1.3";
+  version = "3.2.0";
 
   src = fetchzip {
     url = "https://aomedia.googlesource.com/aom/+archive/v${version}.tar.gz";
-    sha256 = "08rk31d2cp9k9nj37s6a4n7klpfqfbj62anwyiggzsz7b68psjq3";
+    sha256 = "0fmnbzpl481i7kchx4hbvb507r5pfgyrzfrlrs7jk3bicycm75qv";
     stripRoot = false;
   };