fix: update s3 backend MinIO test image
Merged
MA
1mo ago+3+3+0123456789-1-1-0123456789
It seems that the DockerHub mirror for minio was removed, this PR changes it to the one in Quay.io:
https://quay.io/organization/minio
Summary
- Update the MinIO image reference used by the S3 backend test suite.
- Keep the test container dependency pinned to a stable image reference.