Upgrade Jackson to version 2.21.

Upgraded Jackson to the latest release, simplifying some logic in the
MapperFactory. This commit also includes new test dependency updates for
Jersey and TestNG, which were not immediately available after the 5.0.0
release.

Reviewer: vyhhuang
Reviewer: dougbulkley

JiraIssue: DS-51223

Author: kqarryzada

CHANGELOG.md

@@ -3,7 +3,7 @@ All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](https://semver.org/).
 
 ## v5.0.1 - TBD
-Updated Jackson to 2.20.1.
+Updated Jackson to 2.21.0.
 
 ## v5.0.0 - 2025-Dec-15
 For consistency with other open source Ping Identity software, the UnboundID SCIM 2 SDK for Java is

pom.xml

@@ -84,11 +84,11 @@
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <compileSource>17</compileSource>
     <main.basedir>${project.basedir}</main.basedir>
-    <jackson.version>2.20.1</jackson.version>
-    <jackson-annotations.version>2.20</jackson-annotations.version>
+    <jackson.version>2.21.0</jackson.version>
+    <jackson-annotations.version>2.21</jackson-annotations.version>
     <jakarta-rs.version>4.0.0</jakarta-rs.version>
-    <jersey.version>4.0.0</jersey.version>
-    <testng.version>7.11.0</testng.version>
+    <jersey.version>4.0.2</jersey.version>
+    <testng.version>7.12.0</testng.version>
     <assertj.version>3.27.7</assertj.version>
     <maven.surefire.version>3.5.4</maven.surefire.version>
   </properties>

scim2-sdk-common/src/main/java/com/unboundid/scim2/common/utils/MapperFactory.java

@@ -248,12 +248,7 @@ public ObjectMapper createObjectMapper()
     builder.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
 
     // Don't serialize POJO nulls as JSON nulls.
-    //
-    // This can be replaced with "Value.ALL_NON_NULL" when Jackson 2.21 is used.
-    builder.defaultPropertyInclusion(
-        JsonInclude.Value.construct(
-            JsonInclude.Include.NON_NULL,
-            JsonInclude.Include.NON_NULL));
+    builder.defaultPropertyInclusion(JsonInclude.Value.ALL_NON_NULL);
 
     // Only use xsd:dateTime format for dates.
     SimpleModule dateTimeModule = new SimpleModule();