Update secrets_rotation_event.json

Author: M-Elsaeed

aws-lambda-java-tests/src/test/resources/secrets_rotation_event.json

@@ -2,5 +2,5 @@
   "Step" : "CreateSecret",
   "SecretId" : "arn:aws:secretsmanager:eu-central-1:123456789012:secret:/powertools/secretparam-xBPaJ5",
   "ClientRequestToken" : "123e4567-e89b-12d3-a456-426614174000",
-  "RotationToken": "8a4cc1ac-82ea-47c7-bd9f-aeb370b1b6a6"
-}
+  "rotationToken": "8a4cc1ac-82ea-47c7-bd9f-aeb370b1b6a6"
+}