Tests: Fix minio dependency woes about ctor signature changes

[amotl]

Problem

With minio 7.2.19, released on Nov 24, 2025, the workflow breaks.

TypeError: Minio.__init__() takes 1 positional argument but 2 positional arguments (and 3 keyword-only arguments) were given

References

• 7.2.19 makes all parameters in the API keyword only minio/minio-py#1537
• Bug: Minio broken with minio==7.2.19 testcontainers/testcontainers-python#932
• Adapt test_s3 for breaking changes in minio python sdk crate#18770

[coderabbitai]

Walkthrough

A test dependency version constraint for MinIO is updated in pyproject.toml. The entry "minio<7.2.19" is added with a clarifying comment to accommodate compatibility requirements until a newer testcontainers release becomes available.

Changes

Cohort / File(s)	Summary
Test dependency version constraint pyproject.toml	Added optional-dependencies.test entry pinning MinIO to version <7.2.19 with compatibility clarification comment

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

• Simple dependency version constraint addition with clarifying comment
• No logic changes or behavioral modifications

Poem

🐰 A carrot-sized fix hops into place,
MinIO versions now keep proper pace,
Testcontainers await their grand debut,
With <7.2.19, we see it through!
🥕✨

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and specifically describes the main change: fixing minio dependency issues related to constructor signature changes in the test suite.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Description check	✅ Passed	The pull request description clearly identifies the problem (minio 7.2.19 breaking changes), provides the exact error, and references relevant issues and fixes.

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch fix-minio

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