fix(samples): updating both json files. (#540)

* fix(samples): updating both json files.

* pr fix: fixed test.

* 🦉 Updates from OwlBot post-processor

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java-retail/README.md

@@ -27,13 +27,13 @@ If you are using Maven, add this to your pom.xml file:
 If you are using Gradle without BOM, add this to your dependencies:
 
 ```Groovy
-implementation 'com.google.cloud:google-cloud-retail:2.4.0'
+implementation 'com.google.cloud:google-cloud-retail:2.5.0'
 ```
 
 If you are using SBT, add this to your dependencies:
 
 ```Scala
-libraryDependencies += "com.google.cloud" % "google-cloud-retail" % "2.4.0"
+libraryDependencies += "com.google.cloud" % "google-cloud-retail" % "2.5.0"
 ```
 
 ## Authentication

java-retail/samples/interactive-tutorials/src/main/java/events/setup/UpdateUserEventsJson.java

@@ -29,10 +29,10 @@
 public class UpdateUserEventsJson {
 
   public static void main(String[] args) throws IOException {
-    // TODO(developer): Replace these variables before running the sample.
     String filePath = "src/main/resources/user_events.json";
-
+    String invalidFilePath = "src/main/resources/user_events_some_invalid.json";
     updateEventsTimestamp(filePath);
+    updateEventsTimestamp(invalidFilePath);
   }
 
   public static void updateEventsTimestamp(String jsonFile) throws IOException {