upgrade lombok version cause of java 11

vibhav-wego · vibhav-wego · commit 0bf983aee598 · 2019-02-24T14:15:11.000+05:30
diff --git a/extras/retrofit2/pom.xml b/extras/retrofit2/pom.xml
@@ -13,7 +13,7 @@
 
   <properties>
     <retrofit2.version>2.4.0</retrofit2.version>
-    <lombok.version>1.16.20</lombok.version>
+    <lombok.version>1.18.6</lombok.version>
   </properties>
 
   <dependencies>
