Add support for PyPy3.11.

Author: wRAR

.github/workflows/tests-ubuntu.yml

@@ -7,7 +7,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "pypy3.10"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "pypy3.10", "pypy3.11"]
 
     steps:
     - uses: actions/checkout@v4