[releng] Switch to lexical 0.15.0

Signed-off-by: Pierre-Charles David <pierre-charles.david@obeo.fr>

Author: pcdavid

CHANGELOG.adoc

@@ -24,7 +24,7 @@
 - [releng] Switch to `maven-checkstyle-plugin` 3.3.1
 - [releng] Remove the dependency to `reflect-metadata`
 - [releng] Switch to `subscriptions-transport-ws` 0.11.0
-
+- [releng] Switch to `lexical` 0.15.0
 
 === Bug fixes