Update samples' dependencies

samples/rest-notes-spring-data-rest/pom.xml

@@ -11,7 +11,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.4.7</version>
+		<version>2.6.2</version>
 		<relativePath />
 	</parent>
 
@@ -19,6 +19,7 @@
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<java.version>1.8</java.version>
 		<spring-restdocs.version>2.0.6.BUILD-SNAPSHOT</spring-restdocs.version>
+		<h2.version>2.0.206</h2.version>
 	</properties>
 
 	<dependencies>