chore: update pom.xml for events library (#581)

Co-authored-by: Davide Melfi <[email protected]>

Author: darklight3it

aws-lambda-java-events/pom.xml

@@ -37,6 +37,8 @@
         <lombok.version>1.18.22</lombok.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+        <jackson.version>2.20.1</jackson.version>
+        <json.unit>2.40.1</json.unit>
     </properties>
 
     <distributionManagement>
@@ -62,13 +64,13 @@
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-databind</artifactId>
-            <version>2.14.2</version>
+            <version>${jackson.version}</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>net.javacrumbs.json-unit</groupId>
             <artifactId>json-unit-assertj</artifactId>
-            <version>2.36.1</version>
+            <version>${json.unit}</version>
             <scope>test</scope>
         </dependency>