Update Lombok dependency.

Update Lombok to 1.18.34, which has better support for Java 21/22 and
Eclipse 2024-06.

Also make sure that the Maven Lombok plugin uses the latest Lombok
version as well (I thought it was automatically doing that, but it turns
out it does not).

core/pom.xml

@@ -20,7 +20,7 @@
     <dependency>
       <groupId>org.projectlombok</groupId>
       <artifactId>lombok</artifactId>
-      <version>1.18.32</version>
+      <version>1.18.34</version>
     </dependency>
     <dependency>
       <groupId>org.antlr</groupId>
@@ -50,6 +50,13 @@
         <groupId>org.projectlombok</groupId>
         <artifactId>lombok-maven-plugin</artifactId>
         <version>1.18.20.0</version>
+        <dependencies>
+          <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>1.18.34</version>
+          </dependency>
+        </dependencies>
         <executions>
           <execution>
             <phase>generate-sources</phase>