updated the jackson2 version

Author: susheelgupta7

hadoop-project/pom.xml

@@ -69,7 +69,7 @@
     <jersey.version>1.19.4</jersey.version>
 
     <!-- jackson versions -->
-    <jackson2.version>2.12.7</jackson2.version>
+    <jackson2.version>2.15.2</jackson2.version>
     <jackson2.databind.version>2.12.7.1</jackson2.databind.version>
 
     <!-- httpcomponents versions -->

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/pom.xml

@@ -333,16 +333,6 @@
      <dependency>
          <groupId>com.fasterxml.jackson.dataformat</groupId>
          <artifactId>jackson-dataformat-yaml</artifactId>
-         <exclusions>
-             <exclusion>
-                 <groupId>org.yaml</groupId>
-                 <artifactId>snakeyaml</artifactId>
-             </exclusion>
-         </exclusions>
-     </dependency>
-     <dependency>
-         <groupId>org.yaml</groupId>
-         <artifactId>snakeyaml</artifactId>
      </dependency>
   </dependencies>