Test Gradle Plugin against 8.8

Closes gh-40573

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/docs/gradle/managing-dependencies/configure-bom-with-plugins.gradle.kts

@@ -26,6 +26,6 @@ the<DependencyManagementExtension>().apply {
 
 repositories {
 	maven {
-		url = uri("file:repository")
+		url = uri("repository")
 	}
 }

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/docs/gradle/managing-dependencies/configure-bom.gradle

@@ -24,5 +24,5 @@ dependencyManagement {
 }
 
 repositories {
-	maven { url 'file:repository' }
+	maven { url 'repository' }
 }

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/docs/gradle/managing-dependencies/configure-bom.gradle.kts

@@ -27,6 +27,6 @@ the<DependencyManagementExtension>().apply {
 
 repositories {
 	maven {
-		url = uri("file:repository")
+		url = uri("repository")
 	}
 }

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/docs/gradle/managing-dependencies/configure-platform.gradle

@@ -14,7 +14,7 @@ dependencies {
 }
 
 repositories {
-	maven { url 'file:repository' }
+	maven { url 'repository' }
 }
 
 configurations.all {

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/docs/gradle/managing-dependencies/configure-platform.gradle.kts

@@ -15,7 +15,7 @@ dependencies {
 
 repositories {
 	maven {
-		url = uri("file:repository")
+		url = uri("repository")
 	}
 }
 

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/docs/gradle/managing-dependencies/custom-version-with-platform.gradle

@@ -9,7 +9,7 @@ dependencies {
 }
 
 repositories {
-	maven { url 'file:repository' }
+	maven { url 'repository' }
 }
 
 configurations.all {

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/docs/gradle/managing-dependencies/custom-version-with-platform.gradle.kts

@@ -10,7 +10,7 @@ dependencies {
 
 repositories {
 	maven {
-		url = uri("file:repository")
+		url = uri("repository")
 	}
 }
 

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/docs/gradle/managing-dependencies/custom-version.gradle

@@ -19,7 +19,7 @@ ext['slf4j.version'] = '1.7.20'
 // end::custom-version[]
 
 repositories {
-	maven { url 'file:repository' }
+	maven { url 'repository' }
 }
 
 task slf4jVersion {

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/docs/gradle/managing-dependencies/custom-version.gradle.kts

@@ -12,7 +12,7 @@ extra["slf4j.version"] = "1.7.20"
 
 repositories {
 	maven {
-		url = uri("file:repository")
+		url = uri("repository")
 	}
 }
 

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/test/java/org/springframework/boot/gradle/tasks/bundling/AbstractBootArchiveIntegrationTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2023 the original author or authors.
+ * Copyright 2012-2024 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -596,7 +596,11 @@ abstract class AbstractBootArchiveIntegrationTests {
 
 	@TestTemplate
 	void dirModeAndFileModeAreApplied() throws IOException {
-		BuildResult result = this.gradleBuild.build(this.taskName);
+		BuildResult result = this.gradleBuild.expectDeprecationWarningsWithAtLeastVersion("8.8-rc-1")
+			.expectDeprecationMessages("The CopyProcessingSpec.setDirMode(Integer) method has been deprecated",
+					"The CopyProcessingSpec.setFileMode(Integer) method has been deprecated",
+					"upgrading_version_8.html#unix_file_permissions_deprecated")
+			.build(this.taskName);
 		assertThat(result.task(":" + this.taskName).getOutcome()).isEqualTo(TaskOutcome.SUCCESS);
 		try (ZipFile jarFile = new ZipFile(new File(this.gradleBuild.getProjectDir(), "build/libs").listFiles()[0])) {
 			Enumeration<ZipArchiveEntry> entries = jarFile.getEntries();

spring-boot-project/spring-boot-tools/spring-boot-gradle-test-support/src/main/java/org/springframework/boot/testsupport/gradle/testkit/GradleVersions.java

@@ -35,9 +35,9 @@ public final class GradleVersions {
 	@SuppressWarnings("UnstableApiUsage")
 	public static List<String> allCompatible() {
 		if (isJavaVersion(JavaVersion.VERSION_20)) {
-			return Arrays.asList("8.1.1", "8.7");
+			return Arrays.asList("8.1.1", "8.8");
 		}
-		return Arrays.asList("7.5.1", GradleVersion.current().getVersion(), "8.0.2", "8.7");
+		return Arrays.asList("7.5.1", GradleVersion.current().getVersion(), "8.0.2", "8.8");
 	}
 
 	public static String minimumCompatible() {