target jvm/java 11

Author: Sean Levin

behavior-graph/build.gradle

@@ -13,6 +13,14 @@ plugins {
 
 java {
     withSourcesJar()
+    sourceCompatibility = JavaVersion.VERSION_11
+    targetCompatibility = JavaVersion.VERSION_11
+}
+
+kotlin {
+    compilerOptions {
+        jvmTarget = org.jetbrains.kotlin.gradle.dsl.JvmTarget.JVM_11
+    }
 }
 
 tasks.named('jar') {