Bundle a local json-digger copy to support Vaadin 25.2

pom.xml

@@ -220,7 +220,9 @@
 				  <licenseName>apache_v2</licenseName>
 				  <addJavaLicenseAfterPackage>false</addJavaLicenseAfterPackage>
 				  <excludes>
-					<exclude>**/font-awesome.css</exclude>			
+					<exclude>**/font-awesome.css</exclude>
+					<!-- Vendored third-party MIT source; keep its own license header -->
+					<exclude>**/json-digger.js</exclude>
 				  </excludes>
 				</configuration>
 			</plugin>
@@ -521,7 +523,8 @@
 										<exclude>**/test/*</exclude>
 										<exclude>**/integration/*</exclude>
 										<exclude>**/DemoView.class</exclude>
-										<exclude>**/DemoLayout.class</exclude>
+										<exclude>**/DemoLayout.class</exclude>                                        
+                                        <exclude>**/dynamic-theme.properties</exclude>
 									</excludes>
 								</configuration>
 							</execution>
@@ -555,7 +558,7 @@
 			<properties>
 				<maven.compiler.source>21</maven.compiler.source>
 				<maven.compiler.target>21</maven.compiler.target>
-				<vaadin.version>25.0.3</vaadin.version>
+				<vaadin.version>25.2.3</vaadin.version>
 				<jetty.version>11.0.26</jetty.version>
 				<flowingcode.commons.demo.version>5.2.0</flowingcode.commons.demo.version>
 			</properties>

src/main/resources/META-INF/frontend/fc-orgchart.js

@@ -21,7 +21,7 @@
 import {html, PolymerElement} from '@polymer/polymer/polymer-element.js';
 import jQuery from "jquery";
 import html2canvas from 'html2canvas';
-import JSONDigger from "json-digger/dist/json-digger.js";
+import JSONDigger from "./json-digger.js";
 
 /**
  * `fc-orgchart`