Fix failing test

Author: SOHELAHMED7

tests/specs/issue_fix/23_consider_openapi_extension_x_no_relation_also_in_other_pertinent_place/mysql/migrations_mysql_db/m200000_000000_create_table_payments.php

@@ -9,7 +9,7 @@ public function up()
     {
         $this->createTable('{{%payments}}', [
             'id' => $this->primaryKey(),
-            'currency' => $this->text()->null(),
+            'currency' => $this->text()->notNull(),
             'samples' => 'json NOT NULL',
         ]);
     }

tests/specs/issue_fix/23_consider_openapi_extension_x_no_relation_also_in_other_pertinent_place/mysql/migrations_mysql_db/m200000_000001_create_table_samples.php

@@ -9,7 +9,7 @@ public function up()
     {
         $this->createTable('{{%samples}}', [
             'id' => $this->primaryKey(),
-            'message' => $this->text()->null(),
+            'message' => $this->text()->notNull(),
         ]);
     }