racket-minimal: apply upstream patch for darwin

pkgs/development/interpreters/racket/minimal.nix

···
 {
   lib,
   stdenv,
+  fetchpatch,
   fetchurl,
 
   libiconvReal,
···
       circumvent this error.
     */
     ./patches/force-remove-codesign-then-add.patch
+
+    (fetchpatch {
+      name = "darwin-cs-preprocess.patch";
+      url = "https://github.com/racket/racket/commit/ee9fb20a10a1a8e36650681afcafe99f0b044423.patch";
+      hash = "sha256-9aTRzfd3dwznfJg0fwsjhN4SYgXncrGyBCbcmKlxlio=";
+      stripLen = 1;
+    })
   ];
 
   preConfigure =
···
     maintainers = with lib.maintainers; [ rc-zb ];
     mainProgram = "racket";
     platforms = lib.platforms.all;
-    badPlatforms = lib.platforms.darwin;
   };
 })