[CI] skip tests on Python 3.13 (no scipy binaries)

Author: tttapa

.github/workflows/wheel.yml

@@ -303,7 +303,7 @@ jobs:
         env:
           CIBW_BUILD: "${{ matrix.python-id }}*"
           CIBW_ARCHS: ${{ matrix.arch }}
-          CIBW_TEST_SKIP: "*-{win32,win_arm64} pp*" # no CasADi binaries
+          CIBW_TEST_SKIP: "*-{win32,win_arm64} cp313-* pp*" # no CasADi binaries
           CMAKE_PREFIX_PATH: ${{ github.workspace }}/deps
       - name: Upload
         uses: actions/upload-artifact@v4