snl dependency fixed

pom.xml

@@ -37,7 +37,8 @@
 	</dependencyManagement>
 
 	<properties>
-  		<java.version>1.8</java.version>
+  		<maven.compiler.source>11</maven.compiler.source>
+ 		<maven.compiler.target>11</maven.compiler.target>
 		<jaxrs.version>2.0.1</jaxrs.version>
 		<distroDirectory>${project.basedir}/distro</distroDirectory>
 		<gCubeSubsystem>social-networking</gCubeSubsystem>
@@ -59,6 +60,26 @@
 			<version>[2.0.0, 3.0.0)</version>
 			<scope>compile</scope>
 		</dependency>
+		
+<dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-core</artifactId>
+            <version>2.8.7</version>
+</dependency>
+
+
+ <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-annotations</artifactId>
+            <version>2.8.7</version>
+ </dependency>
+
+
+ <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+            <version>2.8.7</version>
+  </dependency>
 		<dependency>
 			<groupId>org.gcube.core</groupId>
 			<artifactId>common-generic-clients</artifactId>
@@ -136,8 +157,8 @@
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-compiler-plugin</artifactId>
 				<configuration>
-					<source>${java.version}</source>
-					<target>${java.version}</target>
+					<source>11</source>
+					<target>11</target>
 				</configuration>
 			</plugin>
 			<plugin>