Use py311 for bpy

Author: YanWenKun

builder/pak5.txt

@@ -1,6 +1,6 @@
 # For HY3D-2.1
 basicsr
-#bpy
+bpy
 cupy-cuda12x
 #deepspeed
 imageio

builder/stage1.sh

@@ -15,7 +15,7 @@ ls -lahF
 # Download Python Standalone
 cd "$workdir"
 curl -sSL \
-https://github.com/astral-sh/python-build-standalone/releases/download/20250814/cpython-3.12.11+20250814-x86_64-pc-windows-msvc-install_only.tar.gz \
+https://github.com/astral-sh/python-build-standalone/releases/download/20250814/cpython-3.11.13+20250814-x86_64-pc-windows-msvc-install_only.tar.gz \
     -o python.tar.gz
 tar -zxf python.tar.gz
 mv python python_standalone