Update build.gradle

Author: erezrokah

build.gradle

@@ -22,8 +22,10 @@ repositories {
     mavenLocal()
 }
 
-sourceCompatibility = 1.8
-targetCompatibility = 1.8
+java {
+    sourceCompatibility = 1.8
+    targetCompatibility = 1.8
+}
 
 def grpcVersion = '1.75.0'
 def protobufVersion = '4.32.1'