Polish json starter

This commit improves the json starter to bring the core starter (as any
other starters do). `spring-web` is now also added as it contains the
Spring's core jackson support.

Closes gh-10031

spring-boot-starters/spring-boot-starter-json/pom.xml

@@ -18,6 +18,14 @@
 		<main.basedir>${basedir}/../..</main.basedir>
 	</properties>
 	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-web</artifactId>
+		</dependency>
 		<dependency>
 			<groupId>com.fasterxml.jackson.core</groupId>
 			<artifactId>jackson-databind</artifactId>

spring-boot-starters/spring-boot-starter-json/src/main/resources/META-INF/spring.provides

-provides: jackson-databind,jackson-datatype-jdk8,jackson-datatype-jsr310,jackson-module-parameter-names,jackson-module-kotlin
\ No newline at end of file
+provides: spring-web,jackson-databind,jackson-datatype-jdk8,jackson-datatype-jsr310,jackson-module-parameter-names,jackson-module-kotlin
\ No newline at end of file