Upgrade to Mockito 5.3.0

Closes gh-34998

spring-boot-project/spring-boot-dependencies/build.gradle

@@ -955,7 +955,7 @@ bom {
 			]
 		}
 	}
-	library("Mockito", "4.11.0") {
+	library("Mockito", "5.3.0") {
 		group("org.mockito") {
 			imports = [
 				"mockito-bom"

spring-boot-project/spring-boot-devtools/src/test/java/org/springframework/boot/devtools/restart/DefaultRestartInitializerTests.java

@@ -103,7 +103,7 @@ class DefaultRestartInitializerTests {
 		DefaultRestartInitializer initializer = new DefaultRestartInitializer();
 		ClassLoader classLoader = new MockAppClassLoader(getClass().getClassLoader());
 		Thread thread = mock(Thread.class);
-		thread.setName("main");
+		given(thread.getName()).willReturn("main");
 		StackTraceElement element = new StackTraceElement(s, "someMethod", "someFile", 123);
 		given(thread.getStackTrace()).willReturn(new StackTraceElement[] { element });
 		given(thread.getContextClassLoader()).willReturn(classLoader);