google-cloud-sdk: add aarch64-darwin

pkgs/tools/admin/google-cloud-sdk/default.nix

@@ -24,6 +24,11 @@ let
       sha256 = "0viiwimnk26jfi4ypkvclqqxw8anlmch10zscjw69d8x1pyqczcd";
     };
 
+    aarch64-darwin = {
+      url = "${baseUrl}/${name}-darwin-arm.tar.gz";
+      sha256 = "sha256-EZbJgMzEZScvaqSKay5aDuayVaIK1zZUzqAHgT0czZk=";
+    };
+
     x86_64-linux = {
       url = "${baseUrl}/${name}-linux-x86_64.tar.gz";
       sha256 = "11113l8pyhq6vbsh79m5anh6ljss94zhnp33ghds9rn1gxa83hnb";
@@ -109,6 +114,6 @@ in stdenv.mkDerivation rec {
     license = licenses.free;
     homepage = "https://cloud.google.com/sdk/";
     maintainers = with maintainers; [ iammrinal0 pradyuman stephenmw zimbatm ];
-    platforms = [ "x86_64-linux" "x86_64-darwin" ];
+    platforms = [ "x86_64-linux" "x86_64-darwin" "aarch64-darwin" ];
   };
 }