update the changelog and version

Author: wordpressfan

readme.txt

@@ -5,7 +5,7 @@ Tags: backup, restore, cloud backup, database backup, wordpress backup
 Requires at least: 4.9
 Tested up to: 6.8
 Requires PHP: 7.4
-Stable tag: 5.2.0
+Stable tag: 5.2.1
 License: GPLv2+
 
 Create a complete WordPress backup easily. Schedule automatic backups, store securely, and restore effortlessly with the best WordPress backup plugin! 
@@ -190,6 +190,11 @@ License URI: http://www.gnu.org/licenses/gpl-2.0.html
 
 == Changelog ==
 
+= 5.2.1 =
+Release date: April 30, 2025
+
+* Bugfix: Fixed fatal error caused by cal_days_in_month() function on 5.2 for unsupported servers.
+
 = 5.2.0 =
 Release date: April 29, 2025