deps: bump proc-macro2 from 1.0.78 to 1.0.103

[dependabot]

Bumps proc-macro2 from 1.0.78 to 1.0.103.

Release notes

Sourced from proc-macro2's releases.

1.0.103

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

1.0.102

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

1.0.101

• Optimize Span location accessors (#519)

1.0.100

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

1.0.99

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

1.0.98

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

1.0.97

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

1.0.96

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

1.0.95

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

1.0.94

• Documentation improvements

1.0.93

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

1.0.92

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

1.0.91

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

1.0.90

• 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)

1.0.89

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

1.0.88

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

1.0.87

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

... (truncated)

Commits

• d1bf13a Release 1.0.103
• 29e08c0 Merge pull request #525 from dtolnay/literalvalue
• f9eec24 Restore support for rustc older than 1.74
• cc983fc Restore support for rustc older than 1.79
• 465f781 Restore support for rustc older than 1.89
• ab5231c Add string literal value tests
• 4c039a8 Add Literal methods from proc_macro_value feature
• 885fde9 Vendor rustc_literal_escaper v0.0.5
• 39b016a Release 1.0.102
• c3870f1 Add raw identifier Debug test
• Additional commits viewable in compare view

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[dependabot]

Superseded by #473.