Update Rust crate proc-macro2 to v1.0.103

[oxide-renovate]

This PR contains the following updates:

Package	Type	Update	Change
proc-macro2	dependencies	patch	1.0.70 -> 1.0.103

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Release Notes

dtolnay/proc-macro2 (proc-macro2)

v1.0.103

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• Add semver-exempt Literal methods str_value, cstr_value, byte_str_value (#​525)

v1.0.102

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• Fix interaction of Display impls for TokenStream and Ident with formatting specifiers for padding, alignment, width (#​523, #​524)

v1.0.101

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• Optimize Span location accessors (#​519)

v1.0.100

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• Stabilize Span methods on Rust 1.88+: start, end, line, column, file, local_file (#​517, #​518)

v1.0.99

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• Prevent Span's unstable API becoming unavailable from a future new compiler lint (#​515)

v1.0.98

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• Disallow prefixed identifier as name of lifetime: 'prefix#lifetime (#​514, rust-lang/rust#126452)

v1.0.97

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• Allow build-script cleanup failure with NFSv3 output directory to be non-fatal (#​505, #​512, thanks @​davvid)

v1.0.96

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• Simplify how rustdoc flags are decided during docs.rs builds (#​511)

v1.0.95

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• Update semver-exempt API under RUSTFLAGS=--cfg=procmacro2_semver_exempt to that of nightly-2025-04-16 (#​497)

v1.0.94

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• Documentation improvements

v1.0.93

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• Optimize TokenStream's Drop (#​489, #​490, thanks @​WalkerKnapp)

v1.0.92

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• Improve compiler/fallback mismatch panic message (#​487)

v1.0.91

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• Fix panic "compiler/fallback mismatch 949" when using TokenStream::from_str from inside a proc macro to parse a string containing doc comment (#​484)

v1.0.90

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• Improve error recovery in TokenStream's and Literal's FromStr implementations to work around rust-lang/rust#58736 such that rustc does not poison compilation on codepaths that should be recoverable errors (#​477, #​478, #​479, #​480, #​481, #​482)

v1.0.89

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• Ensure OUT_DIR is left with deterministic contents after build script execution (#​474)

v1.0.88

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• Return accurate line and column from Span::start and Span::end inside proc macros on nightly (#​472)

v1.0.87

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• Check valid punctuation character in Punct::new (#​470)

v1.0.86

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• Documentation improvements

v1.0.85

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• Mark some tests as only for 64-bit targets (#​463)

v1.0.84

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• Documentation improvements (#​455, thanks @​CensoredUsername)

v1.0.83

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• Optimize the representation of Ident (#​462)

v1.0.82

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• Resolve unexpected_cfgs warning (#​456)

v1.0.81

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• Documentation improvements

v1.0.80

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• Add Literal::byte_character constructor (#​449)
• Add Literal::c_string constructor #​450)

v1.0.79

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• Clean up dead code

v1.0.78

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• Expose Span::byte_range (#​442)

v1.0.77

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• Add a function to reset thread-local span data (#​438, thanks @​buchgr)

v1.0.76

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• Work around dead_code warning false positive (#​435)

v1.0.75

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• Improve error messages related to proc_macro::LexError (#​434)

v1.0.74

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• Work around improperly cached build script result by sccache (#​432)

v1.0.73

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• Documentation improvements

v1.0.72

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• Improve build script to be robust to proc_macro::Span unstable API changes

v1.0.71

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• Turn on deny(unsafe_op_in_unsafe_fn) lint

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