Update dependencies and Maven plugins

- maven-compiler-plugin 3.6.0

- XZ  1.6
- Jackson 2.8.5
- Mockito 2.5.5

Author: cboehme

pom.xml

@@ -83,7 +83,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-compiler-plugin</artifactId>
-				<version>3.5.1</version>
+				<version>3.6.0</version>
 				<configuration>
 					<source>${targetJdk}</source>
 					<target>${targetJdk}</target>
@@ -178,7 +178,7 @@
 		<dependency>
 			<groupId>org.tukaani</groupId>
 			<artifactId>xz</artifactId>
-			<version>1.5</version>
+			<version>1.6</version>
 		</dependency>
 
 		<dependency>
@@ -216,19 +216,19 @@
 		<dependency>
 			<groupId>com.fasterxml.jackson.core</groupId>
 			<artifactId>jackson-core</artifactId>
-			<version>2.8.4</version>
+			<version>2.8.5</version>
 		</dependency>
 
 		<dependency>
 			<groupId>com.fasterxml.jackson.core</groupId>
 			<artifactId>jackson-databind</artifactId>
-			<version>2.8.4</version>
+			<version>2.8.5</version>
 		</dependency>
 
 		<dependency>
 			<groupId>org.mockito</groupId>
 			<artifactId>mockito-core</artifactId>
-			<version>2.2.7</version>
+			<version>2.5.5</version>
 			<scope>test</scope>
 		</dependency>