Fixed #255 - workin on: Update Spring-Boot to 2.3.0

Author: thomaswoehlke

pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>pluginRepositories2.3.0.RELEASE</version>
+        <version>2.3.0.RELEASE</version>
     </parent>
 
     <groupId>org.woehlke</groupId>