bump shadow plugin

Signed-off-by: Christian Dietrich <[email protected]>

Author: cdietrich

org.eclipse.xtext.tests/testdata/wizard-expectations/lsGradleFatjar/lsGradleFatjar.parent/lsGradleFatjar.ide/build.gradle

@@ -1,5 +1,5 @@
 plugins {
-	id 'com.gradleup.shadow' version '8.3.6'
+	id 'com.gradleup.shadow' version '9.3.1'
 }
 
 dependencies {

org.eclipse.xtext.xtext.wizard/src/org/eclipse/xtext/xtext/wizard/IdeProjectDescriptor.xtend

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2015, 2025 itemis AG (http://www.itemis.eu) and others.
+ * Copyright (c) 2015, 2026 itemis AG (http://www.itemis.eu) and others.
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License 2.0 which is available at
  * http://www.eclipse.org/legal/epl-2.0.
@@ -311,7 +311,7 @@ class IdeProjectDescriptor extends ProjectDescriptor {
 			pluginsSection = '''
 				«IF config.languageServer === LanguageServer.FATJAR»
 					plugins {
-						id 'com.gradleup.shadow' version '8.3.6'
+						id 'com.gradleup.shadow' version '9.3.1'
 					}
 					
 				«ENDIF»

org.eclipse.xtext.xtext.wizard/xtend-gen/org/eclipse/xtext/xtext/wizard/IdeProjectDescriptor.java

@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2015, 2025 itemis AG (http://www.itemis.eu) and others.
+ * Copyright (c) 2015, 2026 itemis AG (http://www.itemis.eu) and others.
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License 2.0 which is available at
  * http://www.eclipse.org/legal/epl-2.0.
@@ -1094,7 +1094,7 @@ public GradleBuildFile buildGradle() {
           _builder.append("plugins {");
           _builder.newLine();
           _builder.append("\t");
-          _builder.append("id \'com.gradleup.shadow\' version \'8.3.6\'");
+          _builder.append("id \'com.gradleup.shadow\' version \'9.3.1\'");
           _builder.newLine();
           _builder.append("}");
           _builder.newLine();