Update lombok to 1.18.12

Change-Id: Id7648741ab2d33a7a584ef6903e3bdb0d4b64b54
diff --git a/core/pom.xml b/core/pom.xml
index b1a330a..c7b4e8b 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -230,7 +230,7 @@
 		<dependency>
 			<groupId>org.projectlombok</groupId>
 			<artifactId>lombok</artifactId>
-			<version>1.16.20</version>
+			<version>1.18.12</version>
 		</dependency>
 		<dependency>
 			<groupId>joda-time</groupId>