Version bump on dev

Author: dkotter

classifai.php

@@ -4,7 +4,7 @@
  * Plugin URI:        https://github.com/10up/classifai
  * Update URI:        https://classifaiplugin.com
  * Description:       Enhance your WordPress content with Artificial Intelligence and Machine Learning services.
- * Version:           3.8.0
+ * Version:           3.9.0-dev
  * Requires at least: 6.8
  * Requires PHP:      7.4
  * Author:            10up