Set release date

LordHepipud · LordHepipud · commit 3751a9fca86f · 2023-08-01T13:27:29.000+02:00
diff --git a/doc/31-Changelog.md b/doc/31-Changelog.md
@@ -7,7 +7,7 @@ documentation before upgrading to a new release.
 
 Released closed milestones can be found on [GitHub](https://github.com/Icinga/icinga-powershell-plugins/milestones?state=closed).
 
-# 1.11.0 (2023-06-16)
+# 1.11.0 (2023-08-01)
 
 ### Bugfixes
 
