Bump syn from 1.0.109 to 2.0.90

[dependabot]

Bumps syn from 1.0.109 to 2.0.90.

Release notes

Sourced from syn's releases.

2.0.90

• Fix automatic parenthesization of subexpressions containing outer attributes, such as (#[attr] thing).field (#1785)
• Fix automatic parenthesization of function calls via a struct field, such as (thing.field)() and thing.0() (#1786)

2.0.89

• Fix "compiler/fallback mismatch 949" panic (dtolnay/proc-macro2#483)

2.0.88

• Improve error recovery in parse_str (#1783)

2.0.87

• Add Cursor::any_group (#1777)
• Add Expr::peek (#1778)
• Improve syntax support for enum discriminant expressions in non-"full" mode (#1779)

2.0.86

• Support peeking the end of a parse stream (#1689)
• Allow parse_quote! to produce Vec<Attribute> (#1775)

2.0.85

• Preserve extern static unsafety in ForeignItem::Verbatim (#1773)

2.0.84

• Parse safe and explicitly unsafe extern items (#1768, rust-lang/rust#123743, rust-lang/rfcs#3484)
• Parse self captures: impl Sized + use<Self> (#1772)

2.0.83

• Documentation improvements

2.0.82

• Provide Parse impls for PreciseCapture and CapturedParam (#1757, #1758)
• Support parsing unsafe attributes (#1759)
• Add Fold and VisitMut methods for Vec<Attribute> (#1762)

2.0.81

• Add TypeParamBound::PreciseCapture to represent precise capture syntax impl Trait + use<'a, T> (#1752, #1753, #1754)

2.0.80

• Add Expr::RawAddr (#1743)
• Reject precise captures and ~const in inappropriate syntax positions (#1747)
• Reject trait bound containing only precise capture (#1748)

2.0.79

• Fix infinite loop on parsing chained ranges (#1741)
• Fix panic in parsing use items containing absolute paths (#1742)

2.0.78

• Fix infinite loop on chained comparison (#1739)

2.0.77

... (truncated)

Commits

• ac5b41c Release 2.0.90
• 9037abb Merge pull request #1787 from dtolnay/unparenthesizetest
• 1a549c0 Improve test_unparenthesize to catch more false negatives
• f9aa206 Merge pull request #1786 from dtolnay/fieldcall
• 1445ccf Do not parenthesize unnamed tuple struct fields in call
• 48d0101 Fix parenthesization of field expressions in function calls
• 0e5c568 Add test of parentheses needed in call of field
• 1cf735e Merge pull request #1785 from dtolnay/attrprecedence
• 204c155 Lower precedence of expressions containing outer attrs
• 401399f Add test of attr precedence inside subexpression
• Additional commits viewable in compare view

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