Update parent POM and kiwi dependencies (#31)

* Bump kiwi-parent to 0.4.0
* Bump kiwi to 0.16.0
* Bump kiwi-test to 0.11.0

Fixes #28
Fixes #29
Fixes #30

pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <groupId>org.kiwiproject</groupId>
         <artifactId>kiwi-parent</artifactId>
-        <version>0.3.0</version>
+        <version>0.4.0</version>
     </parent>
 
     <artifactId>metrics-healthchecks-severity</artifactId>
@@ -29,15 +29,15 @@
     <properties>
         <!-- Versions for required dependencies -->
         <dropwizard.metrics.version>4.1.14</dropwizard.metrics.version>
-        <kiwi.version>0.15.0</kiwi.version>
+        <kiwi.version>0.16.0</kiwi.version>
 
         <!-- Versions for provided dependencies -->
 
         <!-- Versions for optional dependencies -->
         <jsr305.version>3.0.2</jsr305.version>
 
         <!-- Versions for test dependencies -->
-        <kiwi.test.version>0.10.0</kiwi.test.version>
+        <kiwi.test.version>0.11.0</kiwi.test.version>
 
         <!-- Sonar properties -->
         <sonar.projectKey>kiwiproject_metrics-healthchecks-severity</sonar.projectKey>