Deleting files sometimes does not delete the S3 file

[daneryl]

Describe the bug
While deleting a file via direct delete or deleting its entity if S3 throws an error like a timeout, all the entries in the DB are properly deleted but the file in S3 remains.

To Reproduce
Steps to reproduce the behavior:

1. Start a blank state uwazi with S3 configured.
2. Create an entity with file or files attached
3. Make sure S3 service is down
4. Delete the file
5. An error is logged about S3 being down
6. The file does not exist in DB anymore but its in the S3 bucket.

Expected behavior
This whole process should be a transaction, if there is an error deleting the file, nothing gets deleted.