fixes dependency convergence.

pom.xml

@@ -63,12 +63,12 @@
         <dependency>
             <groupId>com.fasterxml.jackson.datatype</groupId>
             <artifactId>jackson-datatype-jdk8</artifactId>
-            <version>2.12.1</version>
+            <version>${jackson.version}</version>
         </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.datatype</groupId>
             <artifactId>jackson-datatype-eclipse-collections</artifactId>
-            <version>2.12.1</version>
+            <version>${jackson.version}</version>
         </dependency>
 
         <dependency>
@@ -90,11 +90,12 @@
         </dependency>
 
         <!-- Eclipse Collections -->
-        <dependency>
+        <!-- Added by jackon -->
+        <!--dependency>
             <groupId>org.eclipse.collections</groupId>
             <artifactId>eclipse-collections</artifactId>
             <version>10.4.0</version>
-        </dependency>
+        </dependency-->
 
         <!--dependency>
             <groupId>org.projectlombok</groupId>
@@ -150,6 +151,12 @@
             <artifactId>jjwt-jackson</artifactId>
             <version>0.11.2</version>
             <scope>compile</scope>
+            <exclusions>
+                <exclusion>
+                    <groupId>com.fasterxml.jackson.core</groupId>
+                    <artifactId>jackson-databind</artifactId>
+                </exclusion>
+            </exclusions>
         </dependency>
 
 
@@ -319,6 +326,7 @@
                                 <requireJavaVersion>
                                     <version>15</version>
                                 </requireJavaVersion>
+                                <DependencyConvergence />
                             </rules>
                         </configuration>
                     </execution>
@@ -488,6 +496,7 @@
     </build>
     <properties>
         <jersey.version>3.0.1</jersey.version>
+        <jackson.version>2.11.3</jackson.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <sonar.coverage.jacoco.xmlReportPaths>target/site/jacoco-merged-coverage-report/jacoco.xml