Changelog and version update

Signed-off-by: dartcafe <github@dartcafe.de>

CHANGELOG.md

@@ -1,6 +1,9 @@
 # Changelog
 All notable changes to this project will be documented in this file.
 ##
+## [5.0.3] - 2023-04-20
+### Fix
+ - Fix notification exception for nullish log entries
 ## [5.0.2] - 2023-04-17
 ### Fix
  - Fix crash with shares which have nullish mail addresses

appinfo/info.xml

@@ -4,7 +4,7 @@
     <name>Polls</name>
     <summary>A polls app, similar to Doodle/Dudle with the possibility to restrict access.</summary>
     <description>A polls app, similar to Doodle/Dudle with the possibility to restrict access (members, certain groups/users, hidden and public).</description>
-    <version>5.0.2</version>
+    <version>5.0.3</version>
     <licence>agpl</licence>
     <author>Vinzenz Rosenkranz</author>
     <author>René Gieling</author>