[MNT] [Dependabot](deps): Bump pytorch-lightning from 2.4.0 to 2.6.1

[dependabot]

Bumps pytorch-lightning from 2.4.0 to 2.6.1.

Release notes

Sourced from pytorch-lightning's releases.

Lightning v2.6.1

Changes in 2.6.1

PyTorch Lightning

• Added method chaining support to LightningModule.freeze() and LightningModule.unfreeze() by returning self (#21469)
• Added litlogger integration(#21430)

• Deprecated to_torchscript method due to deprecation of TorchScript in PyTorch (#21397)

• Removed support for Python 3.9 due to end-of-life status (#21398)

• Fixed save_hyperparameters(ignore=...) behavior so subclass ignore rules override base class rules (#21490)
• Fixed LightningDataModule.load_from_checkpoint to restore the datamodule subclass and hyperparameters (#21478)
• Fixed ModelParallelStrategy single-file checkpointing when torch.compile wraps the model so optimizer states no longer raise KeyError during save (#21357)
• Sanitize profiler filenames when saving to avoid crashes due to invalid characters (#21395)
• Fixed StochasticWeightAveraging with infinite epochs (#21396)
• Fixed _generate_seed_sequence_sampling function not producing unique seeds (#21399)
• Fixed ThroughputMonitor callback emitting warnings too frequently (#21453)

Lightning Fabric

• Exposed weights_only argument for loading checkpoints in Fabric.load() and Fabric.load_raw() (#21470)

• Fixed DistributedSamplerWrapper not forwarding set_epoch to the underlying sampler (#21454)
• Fixed DDP notebook CUDA fork check to allow passive initialization when CUDA is not actively used (#21402)

... (truncated)

Commits

• 655a3a9 bump(deps): bump litlogger version to >=0.1.7 (#21517)
• 300c05a Prepare release 2.6.1 (#21516)
• dc16bc5 build(deps): update setuptools requirement from <80.9.1 to <80.10.3 in /requi...
• 6ee3800 build(deps): update torchvision requirement from <0.25.0,>=0.16.0 to >=0.16.0...
• 6478f8e Fix save_hyperparameters ignore precedence in subclasses (#21490)
• 2712587 CI: fix doctest failure from PyTorch LeafSpec FutureWarning (#21502)
• ae1dc6f fix(link-check): resolve broken URLs (#21493)
• f0b1c52 fix(fabric): forward set_epoch to underlying sampler in DistributedSamplerWra...
• bddc253 Fix warning frequency in throughput monitor callback (#21453)
• 2f4b58a build(deps): update numpy requirement from <2.3.5,>2.1.0 to >2.1.0,<2.4.2 in ...
• Additional commits viewable in compare view

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[fkiraly]

false positive, frozen depset for testing

[dependabot]

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version. You can also ignore all major, minor, or patch releases for a dependency by adding an ignore condition with the desired update_types to your config file.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.