[CI] Bump transformers test pin from 5.5.3 to 5.9.0

[lucianommartins]

Purpose

Bump the transformers test dependency from 5.5.3 to 5.8.0 to unblock CI for Gemma4 architectures that depend on modules introduced in transformers 5.8.0.

Without this bump, any CI job that imports these modules fails with ModuleNotFoundError at model init.

Test Plan

• Verified that all Gemma4 model variants load and pass end-to-end generation tests with transformers==5.8.0.
• Verified that existing Gemma4 tower-based tests (Gemma4ForConditionalGeneration) remain unaffected.
• Checked that no other model in the test registry has an upper-bound constraint that conflicts with 5.8.0.

Test Result

• Gemma4 E2B (text, image, multi-image, audio, function calling, thinking)
• Gemma4 26B MoE (text, image, multi-image, function calling, thinking)
• MTP with assistant drafts: verified on all variants

Files Changed

• requirements/test/cuda.in — source pin bump
• requirements/test/rocm.in — source pin bump
• requirements/test/cuda.txt — lockfile updated via sed
• requirements/test/rocm.txt — lockfile updated via sed
• requirements/test/nightly-torch.txt — lockfile updated via sed
• requirements/test/xpu.txt — lockfile updated via sed

[gemini-code-assist]

Code Review

This pull request updates the transformers package version from 5.5.3 to 5.8.0 across several test requirement and lock files. The reviewer pointed out that updating the test requirements without also updating the constraints in requirements/common.txt will cause dependency resolution conflicts. Additionally, the reviewer noted that manually updating the lockfiles instead of using uv pip compile is error-prone and bypasses proper dependency resolution.

[mergify]

Hi @lucianommartins, the pre-commit checks have failed. Please run:

uv pip install pre-commit>=4.5.1
pre-commit install
pre-commit run --all-files

Then, commit the changes and push to your branch.

For future commits, pre-commit will run automatically on changed files before each commit.

Tip

Is mypy failing?

mypy is run differently in CI. If the failure is related to this check, please use the following command to run it locally:

# For mypy (substitute "3.10" with the failing version if needed)
pre-commit run --hook-stage manual mypy-3.10

[hmellor]

I'm going to close this as a duplicate of #41359 now that I am actively working on it again. If any Transformers side changes are required I will be able to get them through faster.