fix building error - add pluginRepository for spring release.

Author: jklata

pom.xml

@@ -44,6 +44,11 @@
             <id>spring-libs-snapshot</id>
             <url>https://repo.spring.io/snapshot</url>
         </pluginRepository>
+        <pluginRepository>
+            <id>repository.spring.release</id>
+            <name>Spring GA Repository</name>
+            <url>https://repo.spring.io/plugins-release/</url>
+        </pluginRepository>
     </pluginRepositories>
 
     <dependencies>