transformers

7252e8d9 - [`Doc`] Fix docbuilder - make `BackboneMixin` and `BackboneConfigMixin` importable from `utils`. (#29002)

[`Doc`] Fix docbuilder - make `BackboneMixin` and `BackboneConfigMixin` importable from `utils`. (#29002) * Trigger doc build * Test removing references * Importable from utils * Trigger another run on a new commit for testing