Moved postage of messages into a reusable standalone implementation

[demos/kafka/outbox] / jdbc

diff --git a/jdbc b/jdbc
index d2fbbf0..bd0d272 160000 (submodule)
--- a/jdbc
+++ b/jdbc
@@ -1 +1 @@
-Subproject commit d2fbbf029e151e37fcd48cbbdb90c3c14a48aa8d
+Subproject commit bd0d27231000709358794cf034ab6c2b0b3db8ab