Fixed known high severity security vulnerability detected in com.fasterxml.jackson.core:jackson-databind

Author: zambrovski

pom.xml

@@ -21,6 +21,7 @@
 		<start-class>de.techjava.mqtt.tf.Starter</start-class>
 		<java.version>1.8</java.version>
 		<paho-version>1.0.2</paho-version>
+    
 	</properties>
 
 	<dependencyManagement>
@@ -71,22 +72,22 @@
 		<dependency>
 			<groupId>com.fasterxml.jackson.core</groupId>
 			<artifactId>jackson-annotations</artifactId>
-			<version>2.6.4</version>
+			<version>2.9.7</version>
 		</dependency>
 		<dependency>
 			<groupId>com.fasterxml.jackson.core</groupId>
 			<artifactId>jackson-core</artifactId>
-			<version>2.6.4</version>
+			<version>2.9.7</version>
 		</dependency>
 		<dependency>
 			<groupId>com.fasterxml.jackson.core</groupId>
 			<artifactId>jackson-databind</artifactId>
-			<version>2.6.4</version>
+			<version>2.9.7</version>
 		</dependency>
 		<dependency>
 			<groupId>com.fasterxml.jackson.dataformat</groupId>
 			<artifactId>jackson-dataformat-xml</artifactId>
-			<version>2.6.4</version>
+			<version>2.9.7</version>
 		</dependency>
 		<dependency>
 			<groupId>org.apache.commons</groupId>