Upgrade to AssertJ 3.15.0

dreis2211 · snicoll · commit 7de3712e56a3 · 2020-01-30T08:14:47.000+01:00
See gh-19985
diff --git a/spring-boot-project/spring-boot-dependencies/build.gradle b/spring-boot-project/spring-boot-dependencies/build.gradle
@@ -101,7 +101,7 @@ bom {
 			]
 		}
 	}
-	library("AssertJ", "3.14.0") {
+	library("AssertJ", "3.15.0") {
 		group("org.assertj") {
 			modules = [
 				"assertj-core"
