mod_collabora: update changelog and version

Author: grabs

CHANGES.md

@@ -4,6 +4,10 @@ moodle-mod_collabora
 Changes
 -------
 
+### v5.0.2
+* fix error on security helper (#56)
+* optimize cache and connection check
+
 ### v5.0.1
 * adjust code for Moodle 5.1
 * apply new coding style

version.php

@@ -23,8 +23,8 @@
  */
 defined('MOODLE_INTERNAL') || die;
 
-$plugin->version   = 2025041901;
-$plugin->release   = 'v5.0.1 (2026022000)';
+$plugin->version   = 2025042000;
+$plugin->release   = 'v5.0.2 (2026052600)';
 $plugin->requires  = 2025040800; // Moodle 5.0.
 $plugin->component = 'mod_collabora';
 $plugin->maturity  = MATURITY_BETA;