Pick correct gson version.

pom.xml

@@ -1,14 +1,15 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
 
   <modelVersion>4.0.0</modelVersion>
 
   <parent>
     <groupId>edu.hm.hafner</groupId>
     <artifactId>codingstyle-pom</artifactId>
-    <version>2.5.0</version>
-    <relativePath />
+    <version>2.7.1</version>
+    <relativePath/>
   </parent>
 
   <artifactId>analysis-model</artifactId>
@@ -60,7 +61,7 @@
     <incrementals.url>https://repo.jenkins-ci.org/incrementals/</incrementals.url>
 
     <!-- Project Dependencies Configuration -->
-    <codingstyle.library.version>2.4.0</codingstyle.library.version>
+    <codingstyle.library.version>2.5.0</codingstyle.library.version>
     <codingstyle.config.version>${codingstyle.library.version}</codingstyle.config.version>
 
     <jmh.version>1.29</jmh.version>
@@ -82,6 +83,16 @@
 
   </properties>
 
+  <dependencyManagement>
+    <dependencies>
+      <dependency>
+        <groupId>com.google.code.gson</groupId>
+        <artifactId>gson</artifactId>
+        <version>2.8.6</version>
+      </dependency>
+    </dependencies>
+  </dependencyManagement>
+
   <dependencies>
 
     <dependency>