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

build.gradle

@@ -1,55 +1,55 @@
-apply plugin: 'java'
-apply plugin: 'eclipse'
-
-
-apply plugin: 'com.github.ben-manes.versions'
-
-buildscript {
-  repositories {
-    jcenter()
-  }
-
-  dependencies {
-  	// usage: gradle dependencyUpdates -Drevision=release
-    classpath 'com.github.ben-manes:gradle-versions-plugin:0.17.0'
-  }
-}
-
-
-/*
- * The shared configuration for all sub-projects:
- */
-subprojects {
-	apply plugin: 'java'
-	apply plugin: 'eclipse'
-
-	// java compatibility version
-	sourceCompatibility = 1.8
-	
-
-	configurations {
-		tests
-	}
-	
-	// the repositories for external depenencies
-	repositories {
-		maven { url 'http://repo.lucares.de/' }
-		mavenCentral()
-		jcenter()
-	}
-	
-	// In this example we use TestNG as our testing tool. JUnit is the default.
-	test{
-		useTestNG()
-		//testLogging.showStandardStreams = true
-	}
-	
-	// dependencies that all sub-projects have 
-	dependencies {
-		testCompile group: 'org.testng', name: 'testng', version: '6.14.3'
-	}
-}
-
-task wrapper(type: Wrapper) {
-    gradleVersion = '4.7'
-}
+apply plugin: 'java'
+apply plugin: 'eclipse'
+
+
+apply plugin: 'com.github.ben-manes.versions'
+
+buildscript {
+  repositories {
+    jcenter()
+  }
+
+  dependencies {
+  	// usage: gradle dependencyUpdates -Drevision=release
+    classpath 'com.github.ben-manes:gradle-versions-plugin:0.19.0'
+  }
+}
+
+
+/*
+ * The shared configuration for all sub-projects:
+ */
+subprojects {
+	apply plugin: 'java'
+	apply plugin: 'eclipse'
+
+	// java compatibility version
+	sourceCompatibility = 1.8
+	
+
+	configurations {
+		tests
+	}
+	
+	// the repositories for external depenencies
+	repositories {
+		maven { url 'http://repo.lucares.de/' }
+		mavenCentral()
+		jcenter()
+	}
+	
+	// In this example we use TestNG as our testing tool. JUnit is the default.
+	test{
+		useTestNG()
+		//testLogging.showStandardStreams = true
+	}
+	
+	// dependencies that all sub-projects have 
+	dependencies {
+		testCompile group: 'org.testng', name: 'testng', version: '6.14.3'
+	}
+}
+
+task wrapper(type: Wrapper) {
+    gradleVersion = '4.8'
+}