fix: pom.xml to reduce vulnerabilities (#809)

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-COMFASTERXMLJACKSONCORE-7569538

Co-authored-by: snyk-bot <snyk-bot@snyk.io>
Co-authored-by: Manisha Singh <singhmanisha.250025@gmail.com>

Author: 3 people

pom.xml

@@ -167,7 +167,7 @@
     </profile>
   </profiles>
   <properties>
-    <jackson.version>2.14.0</jackson.version>
+    <jackson.version>2.15.0</jackson.version>
     <javadoc.plugin.version>3.3.1</javadoc.plugin.version>
     <jjwt.version>0.11.2</jjwt.version>
     <skip.tests>false</skip.tests>
@@ -468,7 +468,7 @@
             </goals>
             <configuration>
               <rules>
-                <dependencyConvergence></dependencyConvergence>
+                <dependencyConvergence/>
               </rules>
             </configuration>
           </execution>