Update Settings API to v2.7.3

- Bump version number for consistency
- Maintain plugin compatibility

Author: ajaydsouza

includes/admin/settings/class-settings-api.php

@@ -20,7 +20,7 @@
 /**
  * Settings API wrapper class
  *
- * @version 2.7.1
+ * @version 2.7.3
  */
 class Settings_API {