build(deps): bump syn from 1.0.109 to 2.0.59

[dependabot]

Bumps syn from 1.0.109 to 2.0.59.

Release notes

Sourced from syn's releases.

2.0.59

• Parse c"…" and cr"…" C-string literal syntax as Lit::CStr (#1502)

2.0.58

• Support $ in custom_punctuation! macro (#1611)

2.0.57

• Eliminate dependency on quote when built with default-features disabled and the "proc-macro" feature enabled (#1608, thanks @​BD103)

2.0.56

• Apply RUSTC_WORKSPACE_WRAPPER when deciding whether to run nightly-only tests (#1605)

2.0.55

• Restore compatibility with rustc 1.56 through 1.59 (#1603)

2.0.54

• Fix dead code warning in generated code when using custom_keyword! with syn's "printing" feature disabled (#1602)

2.0.53

• Implement Copy, Clone, and ToTokens for syn::parse::Nothing (#1597)

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

... (truncated)

Commits

• 922ea2d Release 2.0.59
• 8db6e35 Merge pull request #1622 from dtolnay/cstr
• ff67031 Enable rust-lang/rust test files that contain C-string literals
• 77fb56f Add CStr literal tests
• 6eb76ef Add Lit::CStr
• 1212586 Merge pull request #1621 from dtolnay/edition
• 6a78bba Raise default edition of rust-lang/rust test files to 2021
• 82e572c Add br# suffix test
• b1a55dc Reduce escaping in literal tests
• ade35a6 Delete obsolete integration test
• Additional commits viewable in compare view

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Superseded by #210.