Revert upgrade in Jackson serialization (#593)

* chore: reverted the poms

* chore: upgrading the poms

* chore: update docs

* chore: add targets to tests

* chore: add workflow_dispatch

* chore: add comment to trigger testing

* chore: downgrade jackson library

* chore: removing comment

* chore: new version

* chore: remove file

---------

Co-authored-by: Davide Melfi <dmelfi@amazon.com>

Author: darklight3it

aws-lambda-java-serialization/RELEASE.CHANGELOG.md

@@ -1,3 +1,8 @@
+### March 19, 2026
+`1.3.1`:
+- Revert `jackson-databind` dependency from 2.18.6 to 2.15.4
+- Revert `PropertyNamingStrategies.UpperCamelCaseStrategy` to `PropertyNamingStrategy.PascalCaseStrategy`
+
 ### March 11, 2026
 `1.3.0`:
 - Update `jackson-databind` dependency from 2.15.4 to 2.18.6

aws-lambda-java-serialization/pom.xml

@@ -4,7 +4,7 @@
 
     <groupId>com.amazonaws</groupId>
     <artifactId>aws-lambda-java-serialization</artifactId>
-    <version>1.3.0</version>
+    <version>1.3.1</version>
     <packaging>jar</packaging>
 
     <name>AWS Lambda Java Runtime Serialization</name>
@@ -32,7 +32,7 @@
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
         <relocation.prefix>com.amazonaws.lambda.thirdparty</relocation.prefix>
-        <jackson.version>2.18.6</jackson.version>
+        <jackson.version>2.15.4</jackson.version>
         <gson.version>2.10.1</gson.version>
         <json.version>20231013</json.version>
         <owasp.version>7.3.2</owasp.version>