Use project repositories instead of hardcoded Maven Central in Gradle ChangeDependency

Capture Maven repositories from GradleProject in the scanner and use
them when downloading JARs for JavaSourceSet updates, falling back to
Maven Central only if no remote repository is available. This matches
the approach already used in Maven ChangeDependencyGroupIdAndArtifactId
and both AddDependency recipes.

Author: steve-aom-elliott

rewrite-gradle/src/main/java/org/openrewrite/gradle/ChangeDependency.java

@@ -169,6 +169,7 @@ public static class Accumulator {
         Map<String, Object> versionVariableUpdates = new HashMap<>();
         Map<String, Set<GroupArtifact>> versionVariableUsages = new HashMap<>();
         Map<JavaProject, ResolvedDependency> modulesWithOldDependency = new HashMap<>();
+        Map<JavaProject, List<MavenRepository>> moduleRepositories = new HashMap<>();
     }
 
     @Override
@@ -204,6 +205,7 @@ public boolean isAcceptable(SourceFile sourceFile, ExecutionContext ctx) {
                                 if (StringUtils.matchesGlob(resolved.getGroupId(), oldGroupId) &&
                                     StringUtils.matchesGlob(resolved.getArtifactId(), oldArtifactId)) {
                                     acc.modulesWithOldDependency.put(maybeJp.get(), resolved);
+                                    acc.moduleRepositories.put(maybeJp.get(), gradleProject.getMavenRepositories());
                                     break outer;
                                 }
                             }
@@ -562,14 +564,27 @@ private SourceFile updateJavaSourceSet(SourceFile sf, ExecutionContext ctx) {
                         effectiveNewGroupId, effectiveNewArtifactId, oldDep.getVersion(), null);
                 ResolvedDependency newDep = oldDep
                         .withGav(newGav)
-                        .withRepository(MavenRepository.MAVEN_CENTRAL);
+                        .withRepository(findRemoteRepository(maybeJp.get()));
                 JavaSourceSet updated = updater.changeDependency(maybeSourceSet.get(), oldDep, newDep);
                 if (updated != maybeSourceSet.get()) {
                     updatedSourceSets.put(cacheKey, updated);
                     return sf.withMarkers(sf.getMarkers().setByType(updated));
                 }
                 return sf;
             }
+
+            private MavenRepository findRemoteRepository(JavaProject jp) {
+                List<MavenRepository> repos = acc.moduleRepositories.get(jp);
+                if (repos != null) {
+                    for (MavenRepository repo : repos) {
+                        String uri = repo.getUri();
+                        if (uri != null && (uri.startsWith("http://") || uri.startsWith("https://"))) {
+                            return repo;
+                        }
+                    }
+                }
+                return MavenRepository.MAVEN_CENTRAL;
+            }
         };
     }