godot3-mono: use python311 in scons

The build scripts use distutils, which was removed in Python 3.12:

  File "/build/source/modules/mono/build_scripts/mono_configure.py",
  line 479:
      from distutils.dir_util import copy_tree

pkgs/development/tools/godot/3/mono/default.nix

@@ -5,9 +5,15 @@
 , mono
 , dotnet-sdk
 , writeText
+, scons
+, python311
 }:
 
-godot3.overrideAttrs (self: base: {
+(godot3.override {
+  scons = scons.override {
+    python3 = python311;
+  };
+}).overrideAttrs (self: base: {
   pname = "godot3-mono";
 
   godotBuildDescription = "mono build";

pkgs/development/tools/godot/3/mono/glue.nix

@@ -1,6 +1,10 @@
-{ godot3, mono }:
+{ godot3, mono, scons, python311 }:
 
-godot3.overrideAttrs (self: base: {
+(godot3.override {
+  scons = scons.override {
+    python3 = python311;
+  };
+}).overrideAttrs (self: base: {
   pname = "godot3-mono-glue";
   godotBuildDescription = "mono glue";
   godotBuildPlatform = "server";