Update Websocket sample to be compatible with H2 2.0

Closes gh-2013

Author: eleftherias

spring-session-samples/spring-session-sample-boot-websocket/src/main/java/sample/data/User.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -38,7 +38,7 @@
  *
  * @author Rob Winch
  */
-@Entity
+@Entity(name = "custom_user")
 public class User implements Serializable {
 
 	@Id

spring-session-samples/spring-session-sample-boot-websocket/src/main/resources/data.sql

@@ -1,5 +1,5 @@
-insert into user(id,email,password,first_name,last_name) values (0,'rob','password','Rob','Winch');
-insert into user(id,email,password,first_name,last_name) values (1,'luke','password','Luke','Taylor');
-insert into user(id,email,password,first_name,last_name) values (2,'eve','password','Luke','Taylor');
+insert into custom_user(id,email,password,first_name,last_name) values (0,'rob','password','Rob','Winch');
+insert into custom_user(id,email,password,first_name,last_name) values (1,'luke','password','Luke','Taylor');
+insert into custom_user(id,email,password,first_name,last_name) values (2,'eve','password','Luke','Taylor');
 
-update user set password = '$2a$10$FBAKClV1zBIOOC9XMXf3AO8RoGXYVYsfvUdoLxGkd/BnXEn4tqT3u';
+update custom_user set password = '$2a$10$FBAKClV1zBIOOC9XMXf3AO8RoGXYVYsfvUdoLxGkd/BnXEn4tqT3u';