[megatron-bridge] upgrade to 0.6.2

[wuxibin89]

Type of change

• New image / new build combination (a build_matrix entry, or a new component)
• Component version bump (ref change in versions.yaml)
• Feature / enhancement to the pipeline
• Bug fix
• Docs only

Summary

Closes #

Dependency changes

What	Before	After

Validation

• python3 ci/generate_matrix.py --component <name> | python3 -m json.tool produces the expected matrix
• bash -n ci/build_scripts/<builder>.sh passes
• Green workflow_dispatch run:
• Built wheel installs and imports on the target GPU
• Release tag/title and wheel_packages assets are as expected
• Index refreshed and the wheel is pip install-able

New image / new component checklist

• Submodule added (git submodule add <url> <path>)
• components: entry in versions.yaml complete (path, ref, builder,
  wheel_packages, torch_cuda_arch_list, requires_cudnn, max_jobs,
  runs_on, extra_env)
• ci/build_scripts/<builder>.sh added, executable, and leaves wheels in dist/
• .github/workflows/build-<component>.yml added (copied from
  build-flashinfer.yml for GitHub-hosted, build-apex.yml for self-hosted)
• README.md component table and repo layout updated
• No edits needed to build-all.yml / release.yml (both use --component all)

Risk and rollback

[github-actions]

Wheelhouse build plan (dry run)

Compared the versions.yaml in this change against the releases on verl-project/verl-wheelhouse. Nothing is built or published from this check - it only shows which matrix rows the next push would rebuild and which it would skip, so a human can confirm the plan matches the intent of the change.

1 row(s) would build, 26 row(s) would be skipped.

Component	Ref	Arch	CUDA	Python	Torch	Decision	Reason
apex	master	x86_64	13.0.2	3.11	2.13.0	⏩ skip	exact title, matching build config, and expected wheel packages are present (wheel fatbin re-verification deferred: dry-run mode)
apex	master	x86_64	13.0.2	3.12	2.13.0	⏩ skip	exact title, matching build config, and expected wheel packages are present (wheel fatbin re-verification deferred: dry-run mode)
apex	master	aarch64	13.0.2	3.11	2.13.0	⏩ skip	exact title, matching build config, and expected wheel packages are present (wheel fatbin re-verification deferred: dry-run mode)
apex	master	aarch64	13.0.2	3.12	2.13.0	⏩ skip	exact title, matching build config, and expected wheel packages are present (wheel fatbin re-verification deferred: dry-run mode)
deep-ep	3f601f7ac1c062c46502646ff04c535013bfca00	x86_64	13.0.2	3.11	2.13.0	⏩ skip	exact title, matching build config, and expected wheel packages are present (wheel fatbin re-verification deferred: dry-run mode)
deep-ep	3f601f7ac1c062c46502646ff04c535013bfca00	x86_64	13.0.2	3.12	2.13.0	⏩ skip	exact title, matching build config, and expected wheel packages are present (wheel fatbin re-verification deferred: dry-run mode)
deep-ep	3f601f7ac1c062c46502646ff04c535013bfca00	aarch64	13.0.2	3.11	2.13.0	⏩ skip	exact title, matching build config, and expected wheel packages are present (wheel fatbin re-verification deferred: dry-run mode)
deep-ep	3f601f7ac1c062c46502646ff04c535013bfca00	aarch64	13.0.2	3.12	2.13.0	⏩ skip	exact title, matching build config, and expected wheel packages are present (wheel fatbin re-verification deferred: dry-run mode)
fast-hadamard-transform	e7706faf8d1c3b9f241e36860640ad1dac644ede	x86_64	13.0.2	3.11	2.13.0	⏩ skip	exact title, matching build config, and expected wheel packages are present (wheel fatbin re-verification deferred: dry-run mode)
fast-hadamard-transform	e7706faf8d1c3b9f241e36860640ad1dac644ede	x86_64	13.0.2	3.12	2.13.0	⏩ skip	exact title, matching build config, and expected wheel packages are present (wheel fatbin re-verification deferred: dry-run mode)
fast-hadamard-transform	e7706faf8d1c3b9f241e36860640ad1dac644ede	aarch64	13.0.2	3.11	2.13.0	⏩ skip	exact title, matching build config, and expected wheel packages are present (wheel fatbin re-verification deferred: dry-run mode)
fast-hadamard-transform	e7706faf8d1c3b9f241e36860640ad1dac644ede	aarch64	13.0.2	3.12	2.13.0	⏩ skip	exact title, matching build config, and expected wheel packages are present (wheel fatbin re-verification deferred: dry-run mode)
flash-attention	v2.8.3	x86_64	13.0.2	3.11	2.13.0	⏩ skip	exact title, matching build config, and expected wheel packages are present (wheel fatbin re-verification deferred: dry-run mode)
flash-attention	v2.8.3	x86_64	13.0.2	3.12	2.13.0	⏩ skip	exact title, matching build config, and expected wheel packages are present (wheel fatbin re-verification deferred: dry-run mode)
flash-attention	v2.8.3	aarch64	13.0.2	3.11	2.13.0	⏩ skip	exact title, matching build config, and expected wheel packages are present (wheel fatbin re-verification deferred: dry-run mode)
flash-attention	v2.8.3	aarch64	13.0.2	3.12	2.13.0	⏩ skip	exact title, matching build config, and expected wheel packages are present (wheel fatbin re-verification deferred: dry-run mode)
flash-mla	15f13e5030374295491c5ce31b02d7e63a7772c6	x86_64	13.0.2	3.11	2.13.0	⏩ skip	exact title, matching build config, and expected wheel packages are present (wheel fatbin re-verification deferred: dry-run mode)
flash-mla	15f13e5030374295491c5ce31b02d7e63a7772c6	x86_64	13.0.2	3.12	2.13.0	⏩ skip	exact title, matching build config, and expected wheel packages are present (wheel fatbin re-verification deferred: dry-run mode)
flash-mla	15f13e5030374295491c5ce31b02d7e63a7772c6	aarch64	13.0.2	3.11	2.13.0	⏩ skip	exact title, matching build config, and expected wheel packages are present (wheel fatbin re-verification deferred: dry-run mode)
flash-mla	15f13e5030374295491c5ce31b02d7e63a7772c6	aarch64	13.0.2	3.12	2.13.0	⏩ skip	exact title, matching build config, and expected wheel packages are present (wheel fatbin re-verification deferred: dry-run mode)
flashinfer	v0.6.13	x86_64	13.0.2	3.12	2.13.0	⏩ skip	exact title, matching build config, and expected wheel packages are present (wheel fatbin re-verification deferred: dry-run mode)
flashinfer	v0.6.13	aarch64	13.0.2	3.12	2.13.0	⏩ skip	exact title, matching build config, and expected wheel packages are present (wheel fatbin re-verification deferred: dry-run mode)
megatron-bridge	v0.6.2	x86_64	13.0.2	3.12	2.13.0	🔨 build	release not found or unreadable; it would be created
transformer-engine	v2.16.1	x86_64	13.0.2	3.11	2.13.0	⏩ skip	exact title, matching build config, and expected wheel packages are present (wheel fatbin re-verification deferred: dry-run mode)
transformer-engine	v2.16.1	x86_64	13.0.2	3.12	2.13.0	⏩ skip	exact title, matching build config, and expected wheel packages are present (wheel fatbin re-verification deferred: dry-run mode)
transformer-engine	v2.16.1	aarch64	13.0.2	3.11	2.13.0	⏩ skip	exact title, matching build config, and expected wheel packages are present (wheel fatbin re-verification deferred: dry-run mode)
transformer-engine	v2.16.1	aarch64	13.0.2	3.12	2.13.0	⏩ skip	exact title, matching build config, and expected wheel packages are present (wheel fatbin re-verification deferred: dry-run mode)

_{Each row is decided from the release title, the wheelhouse-build-manifest.json release asset (dependency versions, CUDA arch list, extra env, builder command, max_jobs, runs_on, and sha256 fingerprints of the build-toolchain action, the builder script, the lib/ helpers it sources, cuDNN provisioning when required, and declared patches), and wheel package presence. This dry run does not download wheels; the published wheels' fatbin SM-arch coverage is re-verified at push time and gated before upload. Anything that cannot be verified fails closed towards a rebuild.}