Issue #3233138: If necessary update drupal/core-composer-scaffold and drupal/core-project-message

src/Validation/ReadinessValidationManager.php

@@ -78,10 +78,14 @@ class ReadinessValidationManager {
    * @return $this
    */
   public function run(): self {
+    $core_packages = $this->updater->getCorePackageNames();
+
     $recommender = new UpdateRecommender();
     $release = $recommender->getRecommendedRelease(TRUE);
     if ($release) {
-      $package_versions = [$this->updater->getCorePackageName() => $release->getVersion()];
+      // Update all core packages to the same version.
+      $package_versions = array_fill(0, count($core_packages), $release->getVersion());
+      $package_versions = array_combine($core_packages, $package_versions);
     }
     else {
       $package_versions = [];