Update rust-s3 dependency to fix failed upload

Noticed the following error would happen a lot on OpenShift:

> [2025-08-05T07:07:10Z INFO  core_dump_agent] Setting s3 endpoint location to: <REDACTED>
> [2025-08-05T07:07:10Z INFO  core_dump_agent] Uploading: /var/mnt/core-dump-handler/cores/<REDACTED>.zip
> [2025-08-05T07:07:10Z INFO  core_dump_agent] zip size is 129879392
> [2025-08-05T07:07:19Z ERROR core_dump_agent] Upload Failed hyper: channel closed

Restarting the pod or retrying the upload would not help.

After upgrading, the uploads finally worked again:

> Retrying reqwest: error sending request for url (http://<REDACTED>/core-dumps-storage-bucket-<SNIP>.zip?partNumber=3&uploadId=<REDACTED>)

Signed-off-by: Nathan Monfils <nathan.monfils@destiny.eu>

Author: Nathan Monfils