Adds a update hook for issue https://www.drupal.org/project/publication_date/issues/3066446

publication_date-3066446-updatehook.patch

diff --git a/publication_date.install b/publication_date.install
index df9495a..b9090b0 100755
--- a/publication_date.install
+++ b/publication_date.install
@@ -34,3 +34,19 @@ function _publication_date_update_existing() {
     ->from($nids)
     ->execute();
 }
+
+/**
+ * Set the Tuesday, January 19, 2038 values for unpublished content to NULL.
+ */
+function publication_date_update_8001(&$sandbox) {
+  $query = \Drupal::database()->update('node_field_data');
+  $query->fields(['published_at' => NULL]);
+  $query->condition('published_at', 2147483647);
+  $query->execute();
+
+  $query = \Drupal::database()->update('node_field_revision');
+  $query->fields(['published_at' => NULL]);
+  $query->condition('published_at', 2147483647);
+  $query->execute();
+}
+