fix(logo): not fully deleted

* logo file hasn't been deleted. this prevented a new file upload,
  because of an sqlalchemy.exc.IntegrityError:
  (psycopg2.errors.UniqueViolation) error.

Author: utnapischtim

Diff for: invenio_communities/communities/services/service.py

@@ -4,6 +4,7 @@
 # Copyright (C) 2016-2024 CERN.
 # Copyright (C) 2021-2022 Northwestern University.
 # Copyright (C)      2022 Graz University of Technology.
+# Copyright (C) 2024 Graz University of Technology.
 #
 # Invenio is free software; you can redistribute it and/or modify it
 # under the terms of the MIT License; see LICENSE file for more details.
@@ -278,6 +279,8 @@ def delete_logo(self, identity, id_, uow=None):
         if deleted_file is None:
             raise FileNotFoundError()
 
+        deleted_file.delete(force=True)
+
         uow.register(RecordCommitOp(record))
 
         return self.files.file_result_item(