Update test images to use more recent and maintained alternatives

[coderabbitai]

Problem

During the analysis of PR #650 (removing ACK_GINKGO_DEPRECATIONS), a Python deprecation warning was discovered in the logs:

/opt/app-root/lib/python3.6/site-packages/jupyter_server_mathjax/app.py:40: FutureWarning: The alias '_()' will be deprecated. Use '_i18n()' instead.

This warning originated from the quay.io/thoth-station/s2i-minimal-notebook images used in various test configurations throughout this repository.

Current State

The repository currently uses quay.io/thoth-station/s2i-minimal-notebook images in multiple locations for testing purposes. These images appear to contain outdated dependencies that generate deprecation warnings.

Proposed Solution

We should:

1. Audit current image usage: Identify all locations where quay.io/thoth-station/s2i-minimal-notebook images are used
2. Evaluate alternatives: Research more recent and actively maintained notebook images suitable for testing
3. Update test configurations: Replace outdated images with newer, maintained alternatives
4. Establish maintenance strategy: Create a process for keeping test images up-to-date in the future

Benefits

• Eliminate deprecation warnings in test logs
• Ensure tests run with current dependencies
• Improve test reliability and maintainability
• Reduce noise in CI logs that could mask real issues

References

• Related PR: remove ACK_GINKGO_DEPRECATIONS=1.16.5 env var in make test #650 (remove ACK_GINKGO_DEPRECATIONS=1.16.5 env var in make test)
• Discussion: remove ACK_GINKGO_DEPRECATIONS=1.16.5 env var in make test #650 (comment)

Acceptance Criteria

• Identify all usages of quay.io/thoth-station/s2i-minimal-notebook images
• Research and select appropriate replacement images
• Update test configurations to use new images
• Verify all tests pass with new images
• Document image selection rationale and maintenance process

[jstourac]

Useful comment for the context.