plugin update

(will need to be by player at some point)

plugin/repo.xml

@@ -1,7 +1,7 @@
 <?xml version='1.0' standalone='yes'?>
 <extensions>
   <plugins>
-    <plugin version="0.3" name="SqueezeESP32" minTarget="7.9" maxTarget="7.*">
+    <plugin version="0.4" name="SqueezeESP32" minTarget="7.9" maxTarget="7.*">
       <link>https://github.com/sle118/squeezelite-esp32</link>
       <creator>Philippe</creator>
       <sha>cec20d0489ed120d56ea2de836c616c7d970c0d5</sha>