GHA: upgrade tested versions of PyPy

Author: wjakob

.github/workflows/ci.yml

@@ -21,7 +21,7 @@ jobs:
       fail-fast: false
       matrix:
         os: ['ubuntu-latest', 'windows-2022', 'macos-13']
-        python: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14', 'pypy3.9-v7.3.16', 'pypy3.10-v7.3.17']
+        python: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14', 'pypy3.10-v7.3.19', 'pypy3.11-v7.3.20']
 
     name: "Python ${{ matrix.python }} / ${{ matrix.os }}"
     runs-on: ${{ matrix.os }}