update debian version for release 4.22.0.1

debian/changelog

diff --git a/debian/changelog b/debian/changelog
index d460b89..5c42558 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+cloudstack (4.22.0.1) unstable; urgency=low
+
+  * Update the version to 4.22.0.1
+
+ -- the Apache CloudStack project <dev@cloudstack.apache.org>  Wed, 06 May 2026 12:03:41 +0200
+
 cloudstack (4.22.0.0) unstable; urgency=low
 
   * Update the version to 4.22.0.0