pentobi: 18.4 -> 18.5

pkgs/games/pentobi/default.nix

···
 }:
 
 mkDerivation rec {
-  version = "18.4";
+  version = "18.5";
   pname = "pentobi";
 
   src = fetchFromGitHub {
     owner = "enz";
     repo = "pentobi";
     rev = "v${version}";
-    sha256 = "1wawy6s3i4pcc6n6kfspn5b4g957ds0728mgwzw19agp5yyid73b";
+    sha256 = "sha256-iVgG2Ee1nJWpuquX2ntFHAJrPA0u9YnutmOC+cMrgZg=";
   };
 
   nativeBuildInputs = [ cmake docbook_xsl qttools ];