Update dependency org.projectlombok:lombok to v1.18.42 (#3546)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

flink-core/pom.xml

@@ -122,7 +122,7 @@ under the License.
 		<dependency>
 			<groupId>org.projectlombok</groupId>
 			<artifactId>lombok</artifactId>
-			<version>1.18.40</version>
+			<version>1.18.42</version>
 			<scope>test</scope>
 		</dependency>