chore(beep boop 🤖): Bump uv.lock (main, mcore-dev) (2026-04-04)

[svcnvidia-nemo-ci]

🚀 PR to bump uv.lock in main.

🤖 This PR will be merged automatically once CI passes.

Summary by CodeRabbit

• Chores
  • Updated third-party dependencies to latest versions.

[svcnvidia-nemo-ci]

/ok to test f1bade4

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: d8fda2d4-14bf-42f2-b839-29cfa9602a77

📥 Commits

Reviewing files that changed from the base of the PR and between 39b4a5b and f1bade4.

⛔ Files ignored due to path filters (1)

• uv.lock is excluded by !**/*.lock

📒 Files selected for processing (2)

• .dev.commit
• 3rdparty/Megatron-LM

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📝 Walkthrough

Walkthrough

This PR updates the Megatron-LM git submodule to a new commit hash and synchronizes the development commit reference file with the same commit hash, resulting in minimal line changes across two files.

Changes

Cohort / File(s)	Summary
Development Commit Reference .dev.commit	Updated commit hash reference to match the Megatron-LM submodule update.
Megatron-LM Submodule 3rdparty/Megatron-LM	Bumped git submodule pointer from 17a67b9a97fb11a75933fd7f76ad76e1ac98a53d to 8d1fd3c26be533a466b62392c379af1c4f5e0f01.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~22 minutes

Possibly related PRs

• chore(beep boop 🤖): Bump uv.lock (main) (2026-02-12) #2349: Updates the 3rdparty/Megatron-LM submodule pointer to a different commit hash.
• chore(beep boop 🤖): Bump uv.lock (main, mcore-main) (2026-03-29) #3016: Updates the tracked revision for the 3rdparty/Megatron-LM submodule.
• chore(beep boop 🤖): Bump uv.lock (main) (2026-02-06) #2256: Modifies the 3rdparty/Megatron-LM git submodule pointer with a new commit hash.

Suggested reviewers

• yaoyu-33
• maanug-nv

🚥 Pre-merge checks | ✅ 3 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Title check	⚠️ Warning	The PR title mentions bumping 'uv.lock' but the actual changes are updating .dev.commit and a Megatron-LM submodule pointer, not the uv.lock file.	Update the title to accurately reflect the actual changes: updating .dev.commit file and Megatron-LM submodule reference, not uv.lock.

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Test Results For Major Changes	✅ Passed	PR contains only minor dependency maintenance changes (lock file and submodule updates) with no new features, breaking changes, or significant refactoring.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch bump-ci-container-2026-04-04-main-dev

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