fix(deps): update dependency doctrine/doctrine-migrations-bundle to v3.7.0

Author: renovate[bot]

api/composer.json

@@ -21,7 +21,7 @@
         "cweagans/composer-patches": "2.0.0",
         "doctrine/common": "3.5.0",
         "doctrine/doctrine-bundle": "3.0.0",
-        "doctrine/doctrine-migrations-bundle": "3.6.0",
+        "doctrine/doctrine-migrations-bundle": "3.7.0",
         "doctrine/orm": "3.5.7",
         "exercise/htmlpurifier-bundle": "5.2",
         "friendsofsymfony/http-cache": "3.1.1",