CI: only try to install pyside2 on py311

Author: tacaswell

.github/workflows/tests.yml

@@ -270,8 +270,8 @@ jobs:
           # Even though PySide2 wheels can be installed on Python 3.12+, they are broken and since PySide2 is
           # deprecated, they are unlikely to be fixed. For the same deprecation reason, there are no wheels
           # on M1 macOS, so don't bother there either.
-          if [[ "${{ matrix.os }}" != 'macos-14'
-                && "${{ matrix.python-version }}" != '3.12' && "${{ matrix.python-version }}" != '3.13' ]]; then
+          if [[ "${{ matrix.os }}" != 'macos-14' && "${{ matrix.python-version }}" == '3.11'
+                ]]; then
             python -mpip install --upgrade pyside2 &&
               python -c 'import PySide2.QtCore' &&
               echo 'PySide2 is available' ||