Add dependency to Google Java format

In test scope. To get updates from dependabot.

Author: acogoluegnes

pom.xml

@@ -294,6 +294,14 @@
       <version>${logback.version}</version>
       <scope>test</scope>
     </dependency>
+    <!-- add explicitly to update automatically with dependabot -->
+    <dependency>
+      <groupId>com.google.googlejavaformat</groupId>
+      <artifactId>google-java-format</artifactId>
+      <version>${google-java-format.version}</version>
+      <scope>test</scope>
+    </dependency>
+
 
   </dependencies>