Bump org.eclipse.jdt:ecj from 3.40.0 to 3.42.0 (#1223)

Bumps
[org.eclipse.jdt:ecj](https://github.com/eclipse-jdt/eclipse.jdt.core)
from 3.40.0 to 3.42.0.
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Author: github-actions[bot]

pom.xml

@@ -105,7 +105,7 @@
     <git-code-format-maven-plugin.version>5.3</git-code-format-maven-plugin.version>
 
     <junit.version>5.13.1</junit.version>
-    <ecj.version>3.40.0</ecj.version>
+    <ecj.version>3.42.0</ecj.version>
     <jdo.version>3.2.1</jdo.version>
     <springboot.version>3.5.0</springboot.version>
     <spring.version>6.2.8</spring.version>

querydsl-tooling/querydsl-codegen-utils/src/main/java/com/querydsl/codegen/utils/ECJEvaluatorFactory.java

@@ -61,6 +61,10 @@ public class ECJEvaluatorFactory extends AbstractEvaluatorFactory {
 
   public static CompilerOptions getDefaultCompilerOptions() {
     var javaSpecVersion = System.getProperty("java.specification.version");
+    // use Java 8 compliance to disable module support and avoid NPE in newer ECJ versions
+    if (!javaSpecVersion.startsWith("1.")) {
+      javaSpecVersion = "1.8";
+    }
     Map<String, String> settings = new HashMap<>();
     settings.put(CompilerOptions.OPTION_Source, javaSpecVersion);
     settings.put(CompilerOptions.OPTION_TargetPlatform, javaSpecVersion);