Compatibility Issue with django-storages 1.14.4

[krystofbe]

Hi,

I wanted to bring to your attention a compatibility issue that arises when using django-healthcheck in conjunction with django-storages version 1.14.4.

Description

After upgrading django-storages from 1.14.3 to 1.14.4, django-healthcheck tests that involve file existence checks started failing. The tests report that files cannot be found even though they were saved successfully. This seems to be due to a change in the behavior of the exists() method in django-storages as described in this issue.

Steps to Reproduce

1. Use django-healthcheck to run tests involving file storage.
2. Upgrade django-storages from 1.14.3 to 1.14.4.
3. Run the tests again and observe the failures indicating missing files.

Expected Behavior

Tests should pass as they did with django-storages 1.14.3, with the exists() method correctly identifying saved files.

Actual Behavior

Tests fail, reporting that files cannot be found immediately after they are saved.

Temporary Solution

Downgrading django-storages to 1.14.3 resolves the issue, but this is not a long-term solution due to the security patches included in 1.14.4.