ci: test demo with python 3.12

.github/workflows/go.yml

@@ -129,7 +129,17 @@ jobs:
 
       - name: Test demos
         continue-on-error: true
-        run: bash .github/workflows/test_demo.sh
+        run: |
+          # TODO(lijie): force python3-embed to be linked with python-3.12-embed
+          # Currently, python3-embed is python-3.13-embed, doesn't work with pytorch
+          # Will remove this after pytorch is fixed.
+          pcdir=$HOME/pc
+          mkdir -p $pcdir
+          libdir=$(pkg-config --variable=libdir python-3.12-embed)
+          echo "libdir: $libdir"
+          ln -s $libdir/pkgconfig/python-3.12-embed.pc $pcdir/python3-embed.pc
+          export PKG_CONFIG_PATH=$pcdir
+          bash .github/workflows/test_demo.sh
 
       - name: Show test result
         run: cat result.md