update dependency org.apache.maven.plugin-tools:maven-plugin-annotations 3.5 -> 3.6.0 (travis will tell if this breaks older maven versions)

Author: TheSnoozer

pom.xml

@@ -55,7 +55,7 @@
     <java.target>1.8</java.target>
 
     <maven-plugin-api.version>3.0</maven-plugin-api.version>
-    <maven-plugin-plugin.version>3.5</maven-plugin-plugin.version>
+    <maven-plugin-plugin.version>3.6.0</maven-plugin-plugin.version>
 
     <jgit.version>5.2.0.201812061821-r</jgit.version>
     <junit.version>5.3.1</junit.version>