Make this managed via variable

Author: szabowexler

pom.xml

@@ -15,6 +15,7 @@
   <properties>
     <project.build.targetJdk>1.8</project.build.targetJdk>
     <dep.derive4j.version>0.12.3</dep.derive4j.version>
+    <dep.immutables-utils.version>1.0</dep.immutables-utils.version>
   </properties>
 
   <modules>
@@ -28,12 +29,12 @@
       <dependency>
         <groupId>com.hubspot.immutables</groupId>
         <artifactId>hubspot-style</artifactId>
-        <version>1.0</version>
+        <version>${dep.immutables-utils.version}</version>
       </dependency>
       <dependency>
         <groupId>com.hubspot.immutables</groupId>
         <artifactId>immutables-exceptions</artifactId>
-        <version>1.0</version>
+        <version>${dep.immutables-utils.version}</version>
       </dependency>
       <dependency>
         <groupId>com.hubspot</groupId>