Update aws-lambda-java-events to 3.15.0 (#118)

Co-authored-by: horothesun-scala-steward[bot] <132169906+horothesun-scala-steward[bot]@users.noreply.github.com>

Author: horothesun-scala-steward[bot]

project/Dependencies.scala

@@ -13,7 +13,7 @@ object Dependencies {
 
     val awsLambdaCore = "1.2.3"
 
-    val awsLambdaEvents = "3.14.0"
+    val awsLambdaEvents = "3.15.0"
 
     val logbackClassic = "1.5.16"