update to maven 3.5.3

.gitlab-ci.yml

@@ -10,7 +10,7 @@ variables:
 
 
 java8:
-    image: maven:3.5.0-jdk-8
+    image: maven:3.5.3-jdk-8
     stage: build
     script: 
       - mvn $MAVEN_CLI_OPTS clean org.jacoco:jacoco-maven-plugin:prepare-agent --settings settings.xml deploy 
@@ -30,13 +30,13 @@ jars-j8:
        expire_in: 4 weeks
   
 java7:
-    image: maven:3.5.0-jdk-7
+    image: maven:3.5.3-jdk-7
     stage: test
     script: 
       - mvn $MAVEN_CLI_OPTS clean package -Dmaven.javadoc.skip=true
 
 java9:
-    image: maven:3.5.0-jdk-9
+    image: maven:3.5.3-jdk-9
     stage: test
     script: 
       - mvn $MAVEN_CLI_OPTS clean package -Dmaven.javadoc.skip=true