Bump syn from 1.0.109 to 2.0.52

[dependabot]

Bumps syn from 1.0.109 to 2.0.52.

Release notes

Sourced from syn's releases.

2.0.52

• Add an expression parser that uses match-arm's boundary rules (#1593)

2.0.51

• Resolve non_local_definitions warnings in generated code under rustc 1.78-nightly

2.0.50

• Fix unused_imports warnings when compiled by rustc 1.78

2.0.49

• Improve error location when parsing from an empty string literal using LitStr::parse (#1590)

2.0.48

• Improve error message on unexpected token after else (#1578)

2.0.47

• Improve error messages related to proc_macro::LexError (#1575)

2.0.46

• Update proc-macro2 to fix caching issue when using a rustc-wrapper such as sccache

2.0.45

• Parse unsupported expressions in enum discriminants of DeriveInput as Expr::Verbatim in non-"full" mode, instead of error (#1513)
• Support parsing PatType with parse_quote! (#1573)

2.0.44

• Documentation improvements

2.0.43

• Insert trailing comma if not already present when printing a 1-tuple in pattern position (#1553)

2.0.42

• Documentation improvements

2.0.41

• Support parsing syn::Field in parse_quote! (#1548)

2.0.40

• Fix some edge cases of handling None-delimited groups in expression parser (#1539, #1541, #1542, #1543, #1544, #1545)

2.0.39

• Fix parsing of return expression in match guards (#1528)
• Improve error message on labeled loop as value expression for break (#1531)

2.0.38

• Fix "method 'peek' has an incompatible type for trait" error when defining bool as a custom keyword (#1518, thanks @​Vanille-N)

2.0.37

• Work around incorrect future compatibility warning in rustc 1.74.0-nightly

... (truncated)

Commits

• 07ede6a Release 2.0.52
• acbcfbc Merge pull request #1593 from dtolnay/boundary
• 4924a99 Add an expression parser that uses match-arm's boundary rules
• e06122b Resolve unnecessary_get_then_check clippy lint
• 018fc5a Update test suite to nightly-2024-02-27
• 5e15a9b Release 2.0.51
• 7e0d4e1 Resolve non_local_definitions warning in debug impls
• 8667ad9 Ignore module_name_repetitions pedantic clippy lint in codegen
• 1fc3200 Update test suite to nightly-2024-02-26
• 07a2065 Update test suite to nightly-2024-02-23
• Additional commits viewable in compare view

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[dependabot]

Superseded by #1084.