duo-unix: upgrade, fix full name + version

Signed-off-by: Austin Seipp <[e-mail]>

pkgs/tools/security/duo-unix/default.nix

···
 { stdenv, fetchurl, pam, openssl, zlib }:
 
 stdenv.mkDerivation rec {
-  name = "duo-unix";
-  version = "1.9.7";
+  name = "duo-unix-${version}";
+  version = "1.9.11";
 
   src = fetchurl {
     url    = "https://dl.duosecurity.com/duo_unix-${version}.tar.gz";
-    sha256 = "090kx9nixlhvy5nw0ywqmi7yhd4nz7wvdv38cpkgrspkridfl07j";
+    sha256 = "0747avzmzzz1gaisahgjlpxyxxbrn04w1mip90lfj9wp2x6a9jgm";
   };
 
   buildInputs = [ pam openssl zlib ];