chore(dep): Update aws-lambda-java-core dependency to 1.2.3

Author: deki

aws-serverless-java-container-core/pom.xml

@@ -25,7 +25,7 @@
         <dependency>
             <groupId>com.amazonaws</groupId>
             <artifactId>aws-lambda-java-core</artifactId>
-            <version>1.2.2</version>
+            <version>1.2.3</version>
         </dependency>
 
         <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->