Update project dependencies

Signed-off-by: Pekka Helenius <fincer89@hotmail.com>

bookstore/pom.xml

@@ -7,7 +7,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.2.4.RELEASE</version>
+		<version>2.3.3.RELEASE</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>com.fjordtek.bookstore</groupId>
@@ -52,6 +52,11 @@
 			<artifactId>h2</artifactId>
 		</dependency>
 
+		<dependency>
+			<groupId>javax.validation</groupId>
+			<artifactId>validation-api</artifactId>
+		</dependency>
+
 	</dependencies>
 
 	<build>