build(deps): bump the all-deps group with 4 updates

[dependabot]

Bumps the all-deps group with 4 updates: serde, serde_core, serde_derive and syn.

Updates serde from 1.0.228 to 1.0.229

Release notes

Sourced from serde's releases.

v1.0.229

• Update to syn 3

Commits

• 7fc3b4c Release 1.0.229
• 6d6e9a1 Merge pull request #3085 from dtolnay/syn3
• 6dec3b7 Update to syn 3
• cfe6692 Resolve mut_mut pedantic clippy lint
• 1023d07 Update actions/upload-artifact@v6 -> v7
• dd682c2 Update actions/checkout@v6 -> v7
• 5f0f18b Update ui test suite to nightly-2026-06-01
• 63a1498 Regenerate stderr with trybuild normalization fixes
• fa7da4a Fix unused_features warning
• 6b1a178 Unpin CI miri toolchain
• Additional commits viewable in compare view

Updates serde_core from 1.0.228 to 1.0.229

Release notes

Sourced from serde_core's releases.

v1.0.229

• Update to syn 3

Commits

• 7fc3b4c Release 1.0.229
• 6d6e9a1 Merge pull request #3085 from dtolnay/syn3
• 6dec3b7 Update to syn 3
• cfe6692 Resolve mut_mut pedantic clippy lint
• 1023d07 Update actions/upload-artifact@v6 -> v7
• dd682c2 Update actions/checkout@v6 -> v7
• 5f0f18b Update ui test suite to nightly-2026-06-01
• 63a1498 Regenerate stderr with trybuild normalization fixes
• fa7da4a Fix unused_features warning
• 6b1a178 Unpin CI miri toolchain
• Additional commits viewable in compare view

Updates serde_derive from 1.0.228 to 1.0.229

Release notes

Sourced from serde_derive's releases.

v1.0.229

• Update to syn 3

Commits

• 7fc3b4c Release 1.0.229
• 6d6e9a1 Merge pull request #3085 from dtolnay/syn3
• 6dec3b7 Update to syn 3
• cfe6692 Resolve mut_mut pedantic clippy lint
• 1023d07 Update actions/upload-artifact@v6 -> v7
• dd682c2 Update actions/checkout@v6 -> v7
• 5f0f18b Update ui test suite to nightly-2026-06-01
• 63a1498 Regenerate stderr with trybuild normalization fixes
• fa7da4a Fix unused_features warning
• 6b1a178 Unpin CI miri toolchain
• Additional commits viewable in compare view

Updates syn from 2.0.118 to 3.0.2

Release notes

Sourced from syn's releases.

3.0.2

• Add Error::new_range(start..end, "msg") (#2068, #2070)
• Add Cursor::prev_span

3.0.1

• Parse const traits (#2056, #2057, #2058, #2063, #2064)
• Parse unsafe binder types (#2065)
• Parse impl restrictions (#2066)

3.0.0

This release contains adjustments to the syntax tree to account for ongoing Rust language development from the 3 years since syn 2.0.0 and to anticipate some in-flight Rust language RFCs.

These include: default values in fields, pinned type sugar, raw lifetimes, generator blocks and functions, unnamed enum variants, attributes in tuple types and tuple patterns, named arguments in parenthesized generic argument lists, lightweight clones, const traits, const function pointers, mutability restricted fields, supertrait auto implementation, final associated functions, trait implementability restrictions, const blocks in path arguments, item-level const blocks, return type notation, never patterns, function delegation, mutable by-reference bindings, in-place initialization, field projections, explicitly dyn-compatible traits, view types, file-level frontmatter, generic const arguments, guard patterns, lazy type aliases, explicitly safe foreign items, super let, unsafe fields, pattern types, heterogeneous try-blocks, function contracts, async function trait bounds, static closure coroutine syntax, unsafe binder types, move expressions, for-await loops, and postfix keywords.

Breaking changes

Modifiers

To reserve more room for language evolution, there are 10 new non-exhaustive structs in the syntax tree having the following commonality:

• Name ending in Modifiers. {BlockModifiers, ClosureModifiers, ConstModifiers, FieldModifiers, FnModifiers, ImplModifiers, LocalModifiers, TraitBoundModifiers, TraitModifiers, TypeModifiers}

• Each implements Default. The default value is guaranteed to comprise no tokens.

• Non-exhaustive. Can only be instantiated by Syn's parser or by creating and then mutating ▁▁Modifiers::default().

• Does not implement Parse. When parsing, they are parsed by the enclosing syntax tree node.

• Does not implement ToTokens. In some cases the syntax that these nodes might hold in the future is not necessarily contiguous tokens.

• Provides .require_empty() -> Result<()> which returns a meaningfully spanned error if the modifiers are different from the empty default. This enables a caller to reject syntax it does not recognize without knowing what that syntax may be.

Types

• Type::BareFn has been renamed to Type::FnPtr to mirror the compiler's terminology. Together with this, BareVariadic is renamed to FnPtrVariadic.

• The mutually exclusive const_token and mutability fields of Type::Ptr have been unified into an enum of type PointerMutability, which was already previously used by Expr::RawAddr.

• Every Type variant now holds attributes, which can represent the attributes of element types inside a tuple type, or attributes for a function return type.

• BareFnArg is renamed to NamedArg and is used in ParenthesizedGenericArguments, in addition to the existing use in Type::FnPtr.

Expressions

• In Expr::Closure, the fields or1_token and or2_token have been renamed to inputs_begin and inputs_end to indicate the beginning and ending | token of the closure inputs.

... (truncated)

Commits

• 88ee7be Release 3.0.2
• 587bc20 Merge pull request #2070 from dtolnay/emptyrange
• 96801f7 Allow Error::new_range at empty cursor range
• 9dc16c9 Merge pull request #2069 from dtolnay/prevspan
• 1db76b7 Align on using impl trait across all Error constructors
• bfa1ebf Make Cursor::prev_span public
• c6ac5e5 Merge pull request #2068 from dtolnay/newrange
• 1436454 Add Error::new_range constructor taking Range<Cursor>
• 123c148 Release 3.0.1
• bc11ddd Merge pull request #2067 from dtolnay/fastpeek
• Additional commits viewable in compare view

Most Recent Ignore Conditions Applied to This Pull Request

Dependency Name	Ignore Conditions
syn	[< 2.1, > 2.0.72]

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