Add spring-boot-starter-json

Author: gortazar

parte_2/tema_2.3_rest/rest_ejem8/pom.xml

@@ -25,6 +25,10 @@
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-web</artifactId>
 		</dependency>
+  <dependency>
+    <groupId>org.springframework.boot</groupId>
+    <artifactId>spring-boot-starter-json</artifactId>
+  </dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-devtools</artifactId>