Change branch from develop to master

.github/workflows/KubernetesExternalClients.yaml

@@ -12,7 +12,7 @@ on:
       java_client_run:
         description: Java Client (Standard), (old name is Java thin client) = Set the branch name of client to run, otherwise set it as 'no' in order to skip running this client
         required: true
-        default: develop
+        default: master
       python_run:
         description: PYTHON = Set the branch name of client to run, otherwise set it as 'no' in order to skip running this client
         required: true