prep for 1.15 release (#101)

Author: dgrove-oss

NOTICE.txt

@@ -1,5 +1,5 @@
 Apache OpenWhisk Runtime Docker
-Copyright 2016-2021 The Apache Software Foundation
+Copyright 2016-2023 The Apache Software Foundation
 
 This product includes software developed at
 The Apache Software Foundation (http://www.apache.org/).

core/CHANGELOG.md

@@ -22,6 +22,7 @@
 ## 1.15.0
   - Update base python image to `python:3.11-alpine`
   - Update python dependacies
+  -  Support array result include sequence action (#92)
 
 ## 1.14.0
   - Support for __OW_ACTION_VERSION (openwhisk/4761)