Update changelog

Signed-off-by: mulhern <[email protected]>

Author: mulkieran

CHANGES.txt

@@ -1,3 +1,14 @@
+stratis-cli 3.8.1
+=================
+Required stratisd version: 3.8.0
+
+Recommended development environment: Fedora 40
+Lowest supported Python interpreter: 3.9.16
+
+- Tidies and Maintenance:
+  https://github.com/stratis-storage/stratis-cli/pull/1135
+
+
 stratis-cli 3.8.0
 =================
 Required stratisd version: 3.8.0