CI lock-file regeneration failed to bump setuptools to 78.1.1 across all images

[coderabbitai]

Context

The lock-file regeneration workflow run https://github.com/jiridanek/notebooks/actions/runs/16814498242/job/47627775646 was expected to update every requirements/Pipfile lock to setuptools==78.1.1.

During review of PR #1751, two files are still pinned to 75.8.2:

• jupyter/pytorch+llmcompressor/ubi9-python-3.11/requirements.txt
• runtimes/pytorch+llmcompressor/ubi9-python-3.11/requirements.txt

See the discussion: #1751 (comment).

Problem

Inconsistent setuptools versions can cause subtle build and runtime mismatches in multi-stage images.

Expected

The regeneration workflow should update all lock-files so that every image pins setuptools==78.1.1; python_version >= "3.9" (with correct hashes).

Acceptance Criteria

1. Workflow reliably updates every lock-file and CI verifies the consistency.
2. No remaining references to setuptools==75.8.2 after regeneration.
3. CI rebuilds pass for all affected images.

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Requested by @jiridanek during code review.