Update the version string displayed in the interactive terminal demo

js/site-js-terminal-presentation.js

@@ -8,7 +8,7 @@ const NEW_LINE = '\n'
 const EMPTY_LINE = '\n\n'
 const WAIT_ONE_SEC = '^1000'
 const WAIT_QUARTER_SEC = '^250'
-const VERSION = '12.4.1'
+const VERSION = '12.6.0'
 const NBSP = ' '
 
 //