Correct the permissions of scripts in archives of boot distribution

Closes gh-14158

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/resources/org/springframework/boot/gradle/plugin/ApplicationPluginActionIntegrationTests-scriptsHaveCorrectPermissions.gradle

@@ -0,0 +1,13 @@
+buildscript {
+	dependencies {
+		classpath files(pluginClasspath.split(','))
+	}
+}
+
+apply plugin: 'org.springframework.boot'
+apply plugin: 'application'
+apply plugin: 'java'
+
+bootJar {
+	mainClassName = 'com.example.ExampleApplication'
+}