Try earlier versions to work around #2441

.github/workflows/windows.yml

@@ -71,6 +71,8 @@ jobs:
           dir: ${{matrix.config.QT_INST_DIR}}
           arch: ${{matrix.config.QT_ARCH}}
           setup-python: true
+          aqtversion: '==3.1.*'
+          py7zrversion: '==0.20.*'
           modules: 'qtcharts qtscxml qt5compat qtlocation qtmultimedia qtpositioning qtserialport qtspeech qtwebsockets qtwebengine qtshadertools qtwebchannel'
       - name: build sdrangel on Windows
         if: startsWith(matrix.config.os, 'windows')