build(deps): bump darling_core from 0.20.11 to 0.21.2

[dependabot]

Bumps darling_core from 0.20.11 to 0.21.2.

Release notes

Sourced from darling_core's releases.

v0.21.2

• Add #[darling(from_expr = ...)] when deriving FromMeta to support overriding the key-value form #369
• Keep parsing the body and type params even if there are errors from parsing attributes. #7
• Support #[darling(with = ...)] on the generics field when deriving FromDeriveInput.
• Return an error, rather than panicking, when doing shape validation on a union. #365

v0.21.1

• Track all alternate field names, and show them in error message if there aren't too many. #325
• Track all alternate values for enum variants, and show them in error messages if there aren't too many. #362

v0.21.0

• Potentially breaking: Emit error when an attribute path is present in both attributes and forward_attrs. #336
• Support parsing attributes which contain keywords #238
• Add SpannedValue::into_inner #342
• Add #[darling(derive_syn_parse)] to also impl syn::parse::Parse when deriving FromMeta #285
• Make impl FromMeta for syn::TypePath support both quote-wrapped and bare values #351
• Add util::PreservedStrExpr #346
• Impl UsesTypeParams and UsesLifetimes for WithOriginal #215
• Update error message emitted by <() as FromMeta>::from_list to allow use of () as a #[darling(flatten)] target #353

Changelog

Sourced from darling_core's changelog.

v0.21.2 (August 14, 2025)

• Add #[darling(from_expr = ...)] when deriving FromMeta to support overriding the key-value form #369
• Keep parsing the body and type params even if there are errors from parsing attributes. #7
• Support #[darling(with = ...)] on the generics field when deriving FromDeriveInput.
• Return an error, rather than panicking, when doing shape validation on a union. #365

v0.21.1 (August 4, 2025)

• Track all alternate field names, and show them in error message if there aren't too many. #325
• Track all alternate values for enum variants, and show them in error messages if there aren't too many. #362

v0.21.0 (July 10, 2025)

• Potentially breaking: Emit error when an attribute path is present in both attributes and forward_attrs. #336
• Support parsing attributes which contain keywords #238
• Add SpannedValue::into_inner #342
• Add #[darling(derive_syn_parse)] to also impl syn::parse::Parse when deriving FromMeta #285
• Make impl FromMeta for syn::TypePath support both quote-wrapped and bare values #351
• Add util::PreservedStrExpr #346
• Impl UsesTypeParams and UsesLifetimes for WithOriginal #215
• Update error message emitted by <() as FromMeta>::from_list to allow use of () as a #[darling(flatten)] target #353

Commits

• 65d73d1 Bump version to 0.21.2
• 3e65b82 Update changelog
• f9c8222 Expose from_expr option when deriving FromMeta (#370)
• 59a46eb Don't panic if shape validation is used with a union
• f5b7aef Change rust-version to make lock file versioning work
• 90a3132 Fix clippy violation
• 50a814d Enable #[darling(with = ...)] for generics field
• 7f7dee7 Move Initializer to forwarded_field
• 9655a82 Read and validate generics before returning errors
• d3cc6d3 Errors during attribute parsing don't block data parsing
• Additional commits viewable in compare view

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