Merge branch '2.4.x'

Closes gh-26261

buildSrc/src/main/java/org/springframework/boot/build/JavaConventions.java

@@ -147,6 +147,10 @@ class JavaConventions {
 		project.getTasks().withType(Test.class, (test) -> {
 			test.useJUnitPlatform();
 			test.setMaxHeapSize("1024M");
+			if (buildingWithJava8(project)) {
+				test.systemProperty("java.security.properties",
+						getClass().getClassLoader().getResource("jdk-8156584-security.properties"));
+			}
 		});
 		project.getPlugins().withType(JavaPlugin.class, (javaPlugin) -> project.getDependencies()
 				.add(JavaPlugin.TEST_RUNTIME_ONLY_CONFIGURATION_NAME, "org.junit.platform:junit-platform-launcher"));
@@ -176,13 +180,17 @@ class JavaConventions {
 			if (!args.contains("-parameters")) {
 				args.add("-parameters");
 			}
-			if (!project.hasProperty("toolchainVersion") && JavaVersion.current() == JavaVersion.VERSION_1_8) {
+			if (buildingWithJava8(project)) {
 				args.addAll(Arrays.asList("-Werror", "-Xlint:unchecked", "-Xlint:deprecation", "-Xlint:rawtypes",
 						"-Xlint:varargs"));
 			}
 		});
 	}
 
+	private boolean buildingWithJava8(Project project) {
+		return !project.hasProperty("toolchainVersion") && JavaVersion.current() == JavaVersion.VERSION_1_8;
+	}
+
 	private void configureSpringJavaFormat(Project project) {
 		project.getPlugins().apply(SpringJavaFormatPlugin.class);
 		project.getTasks().withType(FormatTask.class, (formatTask) -> formatTask.setEncoding("UTF-8"));

buildSrc/src/main/resources/jdk-8156584-security.properties

+keystore.pkcs12.keyProtectionAlgorithm=PBEWithHmacSHA256AndAES_256
\ No newline at end of file