chore: exclude some unused Jackson artifacts

spring-boot-starter-web had a dependency on spring-boot-starter-json that brought Jackson with other
extra dependencies:
* jackson-datatype-jdk8
  Add-on module for Jackson to support JDK 8 data types
* jackson-datatype-jsr310
  Add-on module to support JSR-310 (Java 8 Date & Time API) data types
* jackson-module-parameter-names
  Add-on module for Jackson to support introspection of method/constructor parameter names, without
  having to add explicit property name annotation.

At this moment none of them are needed and this change excludes them from resulted WAR file.

Author: php-coder

pom.xml

@@ -133,6 +133,11 @@
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-web</artifactId>
 			<exclusions>
+				<exclusion>
+					<!-- We specify dependency on jackson-databind manually -->
+					<groupId>org.springframework.boot</groupId>
+					<artifactId>spring-boot-starter-json</artifactId>
+				</exclusion>
 				<exclusion>
 					<!-- In favour of spring-boot-starter-jetty -->
 					<groupId>org.springframework.boot</groupId>
@@ -181,6 +186,12 @@
 			<scope>provided</scope>
 		</dependency>
 
+		<dependency>
+			<groupId>com.fasterxml.jackson.core</groupId>
+			<artifactId>jackson-databind</artifactId>
+			<scope>runtime</scope>
+		</dependency>
+		
 		<!-- Dependencies which used only in test environment -->
 		<dependency>
 			<groupId>com.h2database</groupId>