chore(beep boop 🤖): Bump uv.lock (main, mcore-dev) (2026-06-06)

[svcnvidia-nemo-ci]

🚀 PR to bump uv.lock in main.

🤖 This PR will be merged automatically once CI passes.

[svcnvidia-nemo-ci]

/ok to test cdacbe5

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[yaoyu-33]

MCore bump auto-fix status for dev:

Classification: MCore broke Bridge
Evidence: As of June 6, 2026 07:08 PDT, PR #4184 is the current main / mcore-dev automated bump from the June 6, 2026 Daily MCore Bump Journal. It updates .dev.commit from cf081d5df0b34b665d214ff936f27489d7396876 to cefc2520158c7ceba3f9adbe4b547a6f7a118da1 and 3rdparty/Megatron-LM from 64c3fb86ca2b1b875c0206500195b4de2977592a to cefc2520158c7ceba3f9adbe4b547a6f7a118da1. The MCore compare is diverged, ahead_by=481, behind_by=179, merge base 7106fe9e1817886cef6af55630d3cc84be4cab7c, ending at cefc2520158c7ceba3f9adbe4b547a6f7a118da1 ([dev] moe(fix): Avoid TE cuda graph dummy attention masks (#5131), June 5, 2026 UTC). Installation job 79870346873, Launch_Unit_Tests_Core job 79874475576, and Launch_Unit_Tests_Diffusion job 79874475574 all fail during import/collection at src/megatron/bridge/utils/common_utils.py:25 with ImportError: cannot import name 'safe_get_world_size' from 'megatron.core._rank_utils'. Directly checking MCore shows the old _rank_utils.py defines def safe_get_world_size(), while the new dev target does not.
Fix PR: #4094
Guards: none added by this worker. Existing PR #4094 moves Bridge off removed MCore helper surfaces instead of adding a new conditional compatibility guard.
Validation: No new local or CW interactive validation was run in this worker because an existing open fix PR already covers the same target failure. Existing PR #4094 has passing UV - Python3.12 - AMD64/Linux - NGC PyTorch, release / build-test-publish-wheel / build-wheel, Launch_Unit_Tests_Core, Launch_Unit_Tests_Diffusion, Nemo_CICD_Test, and broad CICD checks from May 31-June 1, 2026; its remaining failing check is codecov/patch.
Next action: review and merge PR #4094, then rerun PR #4184 or wait for the next main / mcore-dev automated bump to confirm the helper-import failure is resolved.

[yaoyu-33]

Closing older automated dependency bump PR. Keeping the 2026-06-08 bump PR open.