build(deps): bump syn from 1.0.69 to 1.0.83

[dependabot]

Bumps syn from 1.0.69 to 1.0.83.

Release notes

Sourced from syn's releases.

1.0.83

• Fix panic parsing trait impl with qself in trait type: impl <Thing<>>::Trait for Type {} (#1109)
• Preserve attributes on let-else stmt: #[attr] let pat = val else { return } (#1110)

1.0.82

• Support parenthesized generic argument syntax with :: disambiguator: Fn::() -> ! (#1096)

1.0.81

• Support arbitrary precision negative literal tokens on rustc 1.56+ (#1087, #1088)

1.0.80

• Parse unstable ~const syntax in where-clauses (#1083, tracking issue rust-lang/rust#67792)

1.0.79

• Support trailing + in dyn Trait syntax, including bare (non-dyn) pre-2018 trait object syntax (#1075, #1077, #1078, #1079, #1080, #1081)

1.0.78

• Parse trailing + in the bounds of impl Trait type (#1073)

1.0.77

• Match Rust 1.57+'s parsing of dot and question mark after a curly braced macro invocation (#1068)

1.0.76

• Parse unstable let–else syntax (#1050, #1057)
• Parse qualified braced variant expressions and patterns: <E>::V {..} (#1058, #1059)
• Fix precedence of outer attributes in front of an assignment expression in statement position (#1060)

1.0.75

• Improve spans on a method without body inside an impl block
• Documentation improvements (#922, thanks @​Tamschi)

1.0.74

• Reject for<'a> dyn Trait<'a> syntax; the correct representation is dyn for<'a> Trait<'a> (#1042)

1.0.73

• Add From<Ident>, From<Index>, From<usize> for Member (#1038, thanks @​m-ou-se)

1.0.72

• Parse const generics which use value of a previous const generic parameter as a default value (#1027)

1.0.71

• Fix panic deserializing an ItemImpl with a non-path in trait position (#1023)
• Parse visibility on impl blocks (#1024)
• Fix parsing a type parameter default on the first generic parameter of an impl block (#1025, thanks @​taiki-e)

1.0.70

• Fix precedence of closure body vs ExprRange rhs: || .. .method() (#1019)
• Parse inner attributes inside of structs and enums (#1022)

Commits

• 27ee511 Release 1.0.83
• 47e1bc3 Merge pull request #1110 from dtolnay/attrletelse
• 8d24d27 Preserve attributes on let-else stmt
• b5834ab Update test suite to nightly-2021-12-22
• 04fdba9 Merge pull request #1109 from dtolnay/implqself
• 548d2d9 Ignore let_underscore_drop clippy pedantic lint in test suite
• 650fcff Fix parsing trait impl with qself in trait type
• 7fad27f Add regression test for issue 1108
• c585502 Add a regression test harness using automod
• ab0ed46 Ignore return_self_not_must_use clippy lint
• Additional commits viewable in compare view

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[dependabot]

Superseded by #281.