Bump Version

readme.txt

 === LBDesign Button Shortcode ===
 Contributors: lepittenger
 Tags: shortcode, wordpress button plugin, wordpress buttons, button generator, button, buttons, simple buttons, button shortcode
-Requires at least: 3.0.1
-Tested up to: 4.9.6
-Stable tag: 1.3.2
+Requires at least: 5.3.2
+Tested up to: 5.9.4
+Stable tag: 1.4.0
 License: GPLv2 or later
 License URI: http://www.gnu.org/licenses/gpl-2.0.html