update dependencies

gradle to 4.8
jackson to 2.9.6
spring-boot to 2.0.3
guava to 25.1-jre
gradle-versions-plugin to 0.19.0

pdb-plotting/build.gradle

@@ -2,7 +2,7 @@
 dependencies {
 	compile project(':performanceDb')
 	compile 'org.lucares:primitiveCollections:0.1.20171228131833'
-	compile 'com.fasterxml.jackson.core:jackson-databind:2.9.5'
-	compile 'com.google.guava:guava:24.1-jre'
+	compile 'com.fasterxml.jackson.core:jackson-databind:2.9.6'
+	compile 'com.google.guava:guava:25.1-jre'
 }