update tested version

Author: ozzyrod

README.md

@@ -4,7 +4,7 @@ An ultra lightweight jQuery lightbox for WordPress images and galleries.
 
 __Contributors:__ [Robert Neu](https://github.com/robneu), [Ozzy Rodriguez](https://github.com/ozzyrod), [Cipher Development](https://github.com/cipherdevgroup)
 __Requires:__ WordPress 4.0
-__Tested up to:__ WordPress 5.4.2
+__Tested up to:__ WordPress 5.5.0
 __License:__ [GPL-2.0+](http://www.gnu.org/licenses/gpl-2.0.html)
 
 ![nacin-at-loopconf](https://cloud.githubusercontent.com/assets/2184093/9426378/56c32f16-4902-11e5-9e57-75a4620cc51b.png)

readme.txt

@@ -3,7 +3,7 @@
 Contributors: fatmedia, cipherdevgroup, ozzyr
 Tags: lightbox, jquery lightbox, jquery, gallery, image, lightbox images, image lightbox, lightbox gallery, lightbox image, lightbox popup, featherlight, photo gallery, popup image, popup images, popup lightbox, responsive lightbox, swipe, wordpress image lightbox, wordpress lightbox, wordpress slideshow lightbox, photography, images, minimal, responsive, photo, photos  
 Requires at least: 4.0  
-Tested up to: 5.4.2  
+Tested up to: 5.5.0  
 Stable tag: 1.3.3  
 License: GPL-2.0+