Upgrade Spring Boot to 1.5.4 and other minor version upgrades (#413)

Author: Sille Kamoen

build.gradle

@@ -2,7 +2,7 @@ import org.springframework.boot.gradle.run.BootRunTask
 
 buildscript {
     ext {
-        springBootVersion = '1.5.3.RELEASE'
+        springBootVersion = '1.5.4.RELEASE'
     }
     repositories {
         mavenCentral()
@@ -61,14 +61,14 @@ dependencies {
     compile("org.flywaydb:flyway-core:4.1.2")
 
     compile("org.projectlombok:lombok:1.16.16")
-    compile("com.google.guava:guava:21.0")
+    compile("com.google.guava:guava:22.0")
     compile("nl.stil4m:mollie-api:2.6.2")
 
     runtime("org.hsqldb:hsqldb")
     runtime("org.postgresql:postgresql")
 
     testCompile("org.springframework.boot:spring-boot-starter-test")
-    testCompile("io.rest-assured:rest-assured:3.0.2")
+    testCompile("io.rest-assured:rest-assured:3.0.3")
 }
 
 eclipse {