Updated lombok version. (#1)

Co-authored-by: Artur Kołecki <koleckiartur@icloud.com>
Reviewed-on: R11/release11-mocked-services#1

pom.xml

@@ -8,6 +8,7 @@
 		<version>2.3.1.RELEASE</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
+
 	<groupId>com.release11.mockedservices</groupId>
 	<artifactId>MockedServices</artifactId>
 	<version>0.0.1-SNAPSHOT</version>
@@ -47,7 +48,7 @@
 		<dependency>
 			<groupId>org.projectlombok</groupId>
 			<artifactId>lombok</artifactId>
-			<optional>true</optional>
+			<version>${lombok.version}</version>
 		</dependency>
 		<dependency>
 			<groupId>org.mapstruct</groupId>