AM demod: bumped version

plugins/channelrx/demodam/amdemodplugin.cpp

@@ -9,7 +9,7 @@
 
 const PluginDescriptor AMDemodPlugin::m_pluginDescriptor = {
 	QString("AM Demodulator"),
-	QString("3.14.7"),
+	QString("4.0.6"),
 	QString("(c) Edouard Griffiths, F4EXB"),
 	QString("https://github.com/f4exb/sdrangel"),
 	true,