Configure the bootBuildInfo task lazily

Prior to this commit, the bootBuildInfo was configured eagerly.
Configuring it lazily prevent this task from being configured when not
explicitly needed. Also, the 'classes' and 'bootJar' tasks are now
lazily configured, as the bootBuildInfo task was causing them to be
configured eagerly.

See gh-23435

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/main/java/org/springframework/boot/gradle/dsl/SpringBootExtension.java

@@ -96,16 +96,16 @@ public class SpringBootExtension {
 		TaskProvider<BuildInfo> bootBuildInfo = tasks.register("bootBuildInfo", BuildInfo.class,
 				this::configureBuildInfoTask);
 		this.project.getPlugins().withType(JavaPlugin.class, (plugin) -> {
-			tasks.getByName(JavaPlugin.CLASSES_TASK_NAME).dependsOn(bootBuildInfo.get());
-			this.project.afterEvaluate((evaluated) -> {
-				BuildInfoProperties properties = bootBuildInfo.get().getProperties();
+			tasks.named(JavaPlugin.CLASSES_TASK_NAME).configure((task) -> task.dependsOn(bootBuildInfo));
+			this.project.afterEvaluate((evaluated) -> bootBuildInfo.configure((buildInfo) -> {
+				BuildInfoProperties properties = buildInfo.getProperties();
 				if (properties.getArtifact() == null) {
 					properties.setArtifact(determineArtifactBaseName());
 				}
-			});
+			}));
 		});
 		if (configurer != null) {
-			configurer.execute(bootBuildInfo.get());
+			bootBuildInfo.configure(configurer);
 		}
 	}