Patch to bring the user_revision up to D9 compatibility

user-revision-d9-compat.patch

diff --git a/src/Form/UserRevisionDeleteForm.php b/src/Form/UserRevisionDeleteForm.php
index cb7f0ce..3d3237f 100644
--- a/src/Form/UserRevisionDeleteForm.php
+++ b/src/Form/UserRevisionDeleteForm.php
@@ -42,7 +42,7 @@ class UserRevisionDeleteForm extends ConfirmFormBase {
    * {@inheritdoc}
    */
   public static function create(ContainerInterface $container) {
-    $entity_manager = $container->get('entity.manager');
+    $entity_manager = $container->get('entity_type.manager');
     return new static(
       $entity_manager->getStorage('user')
     );
diff --git a/src/Form/UserRevisionRevertForm.php b/src/Form/UserRevisionRevertForm.php
index 1064d88..354f3b2 100644
--- a/src/Form/UserRevisionRevertForm.php
+++ b/src/Form/UserRevisionRevertForm.php
@@ -43,7 +43,7 @@ class UserRevisionRevertForm extends ConfirmFormBase {
    */
   public static function create(ContainerInterface $container) {
     return new static(
-      $container->get('entity.manager')->getStorage('user')
+      $container->get('entity_type.manager')->getStorage('user')
     );
   }
 
diff --git a/user_revision.info.yml b/user_revision.info.yml
index 63fe7aa..6f7cc2b 100644
--- a/user_revision.info.yml
+++ b/user_revision.info.yml
@@ -2,7 +2,7 @@ name: 'User revision'
 type: module
 description: 'Provides revision support for users.'
 version: VERSION
-core: 8.x
+core_version_requirement: ^8 || ^9
 package: User
 dependencies:
   - user