Upgrade to AssertJ 3.5.2

sbrannen · sbrannen · commit 9115d92f56c1 · 2016-07-23T15:00:04.000+02:00
diff --git a/gradle.properties b/gradle.properties
@@ -10,7 +10,7 @@ vintageVersion      = 4.12.0-SNAPSHOT
 sourceCompatibility = 1.8
 targetCompatibility = 1.8
 
-assertJVersion = 3.4.1
+assertJVersion = 3.5.2
 junit4Version  = 4.12
 log4jVersion   = 2.6.2
 mockitoVersion = 1.10.19
