Use JDK 21 and lombok 1.18.30+

Author: emeraldjava

pom.xml

@@ -25,7 +25,7 @@
 		<module>apache-poi-racemaster</module>
         <module>spring-aop-multi</module>
         <module>dual-contexts</module>
-<!--        <module>vaadin</module>-->
+        <module>vaadin</module>
         <module>flink-inmemory</module>
 		<module>joinfaces</module>
         <module>yaml-properties</module>

vaadin/pom.xml

@@ -13,8 +13,8 @@
     <artifactId>vaadin</artifactId>
 
     <properties>
-        <maven.compiler.source>17</maven.compiler.source>
-        <maven.compiler.target>17</maven.compiler.target>
+        <maven.compiler.source>21</maven.compiler.source>
+        <maven.compiler.target>21</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <vaadin.version>23.3.30</vaadin.version>
     </properties>
@@ -38,6 +38,7 @@
         <dependency>
             <groupId>org.projectlombok</groupId>
             <artifactId>lombok</artifactId>
+            <version>1.18.30</version>
             <scope>provided</scope>
         </dependency>
         <dependency>
@@ -75,8 +76,8 @@
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
                 <configuration>
-                    <source>17</source>
-                    <target>17</target>
+                    <source>21</source>
+                    <target>21</target>
                     <compilerArgs>
                         <arg>--enable-preview</arg>
                     </compilerArgs>