Update dependency attrs to v25

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
attrs (changelog)	==24.3.0 -> ==25.3.0

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Release Notes

python-attrs/attrs (attrs)

v25.3.0

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Changes

• Restore support for generator-based field_transformers.
  #​1417

v25.2.0

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Changes

• Checking mandatory vs non-mandatory attribute order is now performed after the field transformer, since the field transformer may change attributes and/or their order.
  #​1147
• attrs.make_class() now allows for Unicode class names.
  #​1406
• Speed up class creation by 30%-50% by compiling methods only once and using a variety of other techniques.
  #​1407
• The error message if an attribute has both an annotation and a type argument will now disclose what attribute seems to be the problem.
  #​1410

v25.1.0

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Changes

• This release only ensures correct PyPI licensing metadata.
  #​1386

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