Chsnge to OpenApi 3.0

In preparation for the Java 17 and Springboot 3 migrations Swagger Codegen has to upgrade to OpenApi 3.0
This effects cps-rest and cps-ncmp-rest

Issue-Id: CPS-1745

Signed-off-by: egernug <gerard.nugent@est.tech>
Change-Id: I18b8e9ca26d0123009702c2474efbfbeec6d4c44
diff --git a/cps-ncmp-rest/docs/openapi/openapi-inventory.yml b/cps-ncmp-rest/docs/openapi/openapi-inventory.yml
index bd83dbf..b794082 100755
--- a/cps-ncmp-rest/docs/openapi/openapi-inventory.yml
+++ b/cps-ncmp-rest/docs/openapi/openapi-inventory.yml
@@ -1,6 +1,6 @@
 #  ============LICENSE_START=======================================================
 #  Copyright (C) 2021 Bell Canada
-#  Modifications Copyright (C) 2022 Nordix Foundation
+#  Modifications Copyright (C) 2022-2023 Nordix Foundation
 #  ================================================================================
 #  Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
@@ -17,7 +17,7 @@
 #  SPDX-License-Identifier: Apache-2.0
 #  ============LICENSE_END=========================================================
 
-openapi: 3.0.1
+openapi: 3.0.3
 info:
   title: NCMP Inventory API
   description: NCMP Inventory API