Draft: Issue #3207456: Drupal 9 is dependent on symfony/mime directly

core/composer.json

@@ -23,6 +23,7 @@
         "symfony/event-dispatcher": "^4.4",
         "symfony/http-foundation": "^4.4.7",
         "symfony/http-kernel": "^4.4",
+        "symfony/mime": "^5.2",
         "symfony/routing": "^4.4",
         "symfony/serializer": "^4.4",
         "symfony/translation": "^4.4",