Upgraded JDK-Version, Spring Boot & Docker for all servies

[demos/kafka/wordcount] / splitter

diff --git a/splitter b/splitter
index 836368a..e834325 160000 (submodule)
--- a/splitter
+++ b/splitter
@@ -1 +1 @@
-Subproject commit 836368acb5e435a733df5893e477a406daeafcb3
+Subproject commit e834325a1d41d2b448b7e97b7a491e85f02cd403