try to test using pypy-3.10

Signed-off-by: Andreas Lauser <[email protected]>

Author: andlaus

.github/workflows/pythonpackage.yml

@@ -32,7 +32,7 @@ jobs:
     strategy:
       matrix:
         os: [ "ubuntu-latest", "windows-latest", "macos-latest" ]
-        python-version: ["3.9", "3.13"]
+        python-version: ["3.9", "3.13", "pypy-3.10"]
       fail-fast: false
     steps:
     - uses: actions/checkout@v4