build(deps): update bitsandbytes requirement from ~=0.41.3 to ~=0.42.0

[dependabot[bot]]

Updates the requirements on bitsandbytes to permit the latest version.

Release notes

Sourced from bitsandbytes's releases.

4-bit serialization and bug fixes

This release added 4-bit serialization, implemented by @​poedator, to bitsandbytes. With this,you can call model.save() and model.load() for models that contain 4-bit bitsandbytes layers meaning you can save and load 4-bit models. All of this is integrated with the Hugging Face transformers stack. The 0.42.0 release also comes with many bug fixes. See below for detailed change logs.

0.42.0

Features:

• 4-bit serialization now supported. This enables 4-bit load/store. Thank you @​poedator #753
• the bitsandbytes library now has a version attribute: bitsandbytes.__version__ @​rasbt #710

Bug fixes:

• Fixed bugs in dynamic exponent data type creation. Thank you @​RossM, @​KohakuBlueleaf, @​ArrowM #659 #227 #262 #152
• Fixed an issue where 4-bit serialization would fail for layers without double quantization #868. Thank you, @​poedator
• Fixed an issue where calling .to() or .cuda() on a 4-bit layer twice would result in an error #867. Thank you, @​jph00
• Fixed a bug where a missing access permission in a path searched for CUDA would lead to an error @​osma #677
• Fixed a bug where the GOOGLE_VM_CONFIG_LOCK_FILE variable could cause errors in colab environments @​akrentsel @​xaptronic #715 #883 #622
• Fixed a bug where kgetColRowStats (LLM.int8()) would fail for certain dimensions @​LucQueen #905
• Fixed a bug where the adjusted regular Embedding layer was not available via bnb.nn.Embedding @​neel04 #563
• Fixed added missing scipy requirement @​dulalbert #525

Changelog

Sourced from bitsandbytes's changelog.

0.42.0

Features:

• 4-bit serialization now supported. This enables 4-bit load/store. Thank you @​poedator #753
• the bitsandbytes library now has a version attribute: bitsandbytes.__version__ @​rasbt #710

Bug fixes:

• Fixed bugs in dynamic exponent data type creation. Thank you @​RossM, @​KohakuBlueleaf, @​ArrowM #659 #227 #262 #152
• Fixed an issue where 4-bit serialization would fail for layers without double quantization #868. Thank you, @​poedator
• Fixed an issue where calling .to() or .cuda() on a 4-bit layer twice would result in an error #867. Thank you, @​jph00
• Fixed a bug where a missing access permission in a path searched for CUDA would lead to an error @​osma #677
• Fixed a bug where the GOOGLE_VM_CONFIG_LOCK_FILE variable could cause errors in colab environments @​akrentsel @​xaptronic #715 #883 #622
• Fixed a bug where kgetColRowStats (LLM.int8()) would fail for certain dimensions @​LucQueen @​905
• Fixed a bug where the adjusted regular Embedding layer was not available via bnb.nn.Embedding @​neel04 #563
• Fixed added missing scipy requirement @​dulalbert #525

Commits

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (1681708) 93.76% compared to head (7309b63) 93.76%.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #291 +/- ## ======================================= Coverage 93.76% 93.76% ======================================= Files 7 7 Lines 337 337 ======================================= Hits 316 316 Misses 21 21 ```

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