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

[demos/kafka/wordcount] / users

diff --git a/users b/users
index aa0d1c4..4f16805 160000 (submodule)
--- a/users
+++ b/users
@@ -1 +1 @@
-Subproject commit aa0d1c4c8e47b2fffc5fa0ca2cae83f64ed8dd4e
+Subproject commit 4f16805af7e69c189daa364f113f57ee9abfc079