build(deps): bump syn from 2.0.60 to 2.0.69

[dependabot]

Bumps syn from 2.0.60 to 2.0.69.

Release notes

Sourced from syn's releases.

2.0.69

• Correctly parenthesize labeled loops inside a break value (#1692)
• Add Punctuated::get and get_mut (#1693)

2.0.68

• Improve panic location when parse_quote! parses invalid syntax (#1690, thanks @​stepancheg)
• More efficient peek implementation for Group and Lifetime (#1687)

2.0.67

• Produce more accurate error message locations for errors located at the end of a nested group (#1679, #1680)
• Support peeking LitCStr in ParseStream::peek (#1682)

2.0.66

• Allow braced structs when parsing ExprLet (#1671)

2.0.65

• Optimize the implementation of Fold to compile faster (#1666, #1667, #1668)

2.0.64

• Support using ParseBuffer across catch_unwind (#1646)
• Validate that the expression in a let-else ends in brace as required by rustc (#1648, #1649)
• Legalize invalid const generic arguments by wrapping in braces (#1654, #1655)
• Fix some expression precedence edge cases involving break and return in loop headers (#1656)
• Always print closure bodies with a brace when the closure has an explicit return type (#1658)
• Automatically insert necessary parentheses in ToTokens for Expr when required by expression precedence (#1659)
• Support struct literal syntax in match guard expressions (#1662)

2.0.63

• Parse and print long if-else-if chains without reliance on deep recursion to avoid overflowing stack (#1644, #1645)

2.0.62

• Reject invalid unparenthesized range and comparison operator expressions (#1642, #1643)

2.0.61

• Check for legal binding name in the ident of Pat::Ident (#1627)
• Resolve unexpected_cfgs warning (#1635)

Commits

• d4a0ff5 Release 2.0.69
• 0f72134 Improve precedence variant name of sum and product operators
• 06f34fc Merge pull request #1693 from dtolnay/get
• a443857 Add Punctuated::get and get_mut
• f0dfdbd Update test suite to nightly-2024-07-05
• 1560f9a Merge pull request #1692 from dtolnay/break
• 4e71c1c Parenthesize labeled loops inside break value
• 93931a4 Add fixup test for break with leading label
• cc5e64e Update test suite to nightly-2024-06-29
• 2bbf612 Merge pull request #1691 from dtolnay/postfix
• Additional commits viewable in compare view

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[dependabot]

Superseded by #66.