fix migration interface

Author: solverat

README.md

@@ -21,7 +21,7 @@
 
 ```json
 "require" : {
-    "dachcom-digital/formbuilder" : "~4.2.0"
+    "dachcom-digital/formbuilder" : "~4.4.0"
 }
 ```
 

src/FormBuilderBundle/Migrations/Version20230303094642.php

@@ -7,9 +7,10 @@
 use Doctrine\DBAL\Schema\Schema;
 use Doctrine\Migrations\AbstractMigration;
 use FormBuilderBundle\Tool\Install;
+use Symfony\Component\DependencyInjection\ContainerAwareInterface;
 use Symfony\Component\DependencyInjection\ContainerAwareTrait;
 
-final class Version20230303094642 extends AbstractMigration
+final class Version20230303094642 extends AbstractMigration implements ContainerAwareInterface
 {
     use ContainerAwareTrait;