build: add lombok dependency

Author: javier-godoy

pom.xml

@@ -121,6 +121,12 @@
 			<artifactId>vaadin-core</artifactId>
 			<optional>true</optional>
 		</dependency>
+		<dependency>
+			<groupId>org.projectlombok</groupId>
+			<artifactId>lombok</artifactId>
+			<version>1.18.34</version>
+			<scope>provided</scope>
+		</dependency>
 		<dependency>
 			<groupId>jakarta.servlet</groupId>
 			<artifactId>jakarta.servlet-api</artifactId>