Make afterResolve hook used by bootJar and bootWar more robust

Previously, ResolvedDependencies used hasError on
ResolvedConfiguration to check that it was safe to work with all
of the resolved configuration's artifacts and their files. This
check is not sufficient as errors can still occur later on.

This commit updates ResolvedDependencies to use a lenient
configuration, thereby avoiding any problems that may be caused by
errors that occur after the hasError check.

Closes gh-30586

Author: wilkinsona

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 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 @@ private static class ResolvedConfigurationDependencies {
 		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());