Merge branch '2.6.x' into 2.7.x

Closes gh-31213

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/main/java/org/springframework/boot/gradle/tasks/bundling/ResolvedDependencies.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2021 the original author or authors.
+ * Copyright 2012-2022 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.
@@ -24,6 +24,7 @@ import java.util.stream.Collectors;
 
 import org.gradle.api.Project;
 import org.gradle.api.artifacts.Configuration;
+import org.gradle.api.artifacts.LenientConfiguration;
 import org.gradle.api.artifacts.ModuleVersionIdentifier;
 import org.gradle.api.artifacts.ResolvedArtifact;
 import org.gradle.api.artifacts.ResolvedConfiguration;
@@ -75,7 +76,11 @@ class ResolvedDependencies {
 		ResolvedConfigurationDependencies(Set<String> projectDependencyIds,
 				ResolvedConfiguration resolvedConfiguration) {
 			if (!resolvedConfiguration.hasError()) {
-				for (ResolvedArtifact resolvedArtifact : resolvedConfiguration.getResolvedArtifacts()) {
+				LenientConfiguration lenientConfiguration = resolvedConfiguration.getLenientConfiguration();
+				// Ensure that all files are resolved, allowing Gradle to resolve in
+				// parallel if they are not
+				lenientConfiguration.getFiles();
+				for (ResolvedArtifact resolvedArtifact : lenientConfiguration.getArtifacts()) {
 					ModuleVersionIdentifier id = resolvedArtifact.getModuleVersion().getId();
 					boolean projectDependency = projectDependencyIds
 							.contains(id.getGroup() + ":" + id.getName() + ":" + id.getVersion());