Drop PyPy < 3.11 (PyO3 only supports 3.11+)

Author: smheidrich

.github/workflows/test.yml

@@ -31,10 +31,10 @@ jobs:
             path: ~/Library/Caches/pip
           # more combinations:
           - os: ubuntu-22.04
-            python-version: "pypy3.9"
+            python-version: "pypy3.11"
             path: ~/.cache/pip
           - os: ubuntu-22.04-arm
-            python-version: "pypy3.9"
+            python-version: "pypy3.11"
             path: ~/.cache/pip
     steps:
       - uses: actions/checkout@v4