Fix vulnerable dependency

Signed-off-by: Vasyl Razinkov <vasyl.razinkov@est.tech>
Issue-ID: SDC-3795
Change-Id: Ib6f7902b2f8380ad9febcc2fad0374e8070af15c
diff --git a/openecomp-be/lib/openecomp-sdc-notification-lib/openecomp-sdc-notification-websocket/pom.xml b/openecomp-be/lib/openecomp-sdc-notification-lib/openecomp-sdc-notification-websocket/pom.xml
index a5e1eae..475ce54 100644
--- a/openecomp-be/lib/openecomp-sdc-notification-lib/openecomp-sdc-notification-websocket/pom.xml
+++ b/openecomp-be/lib/openecomp-sdc-notification-lib/openecomp-sdc-notification-websocket/pom.xml
@@ -36,7 +36,7 @@
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.3.1</version>
+            <version>${gson.version}</version>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>