fix(deps): update rust crate proc-macro2 to v1.0.93

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
proc-macro2	dependencies	patch	1.0.83 -> 1.0.93

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Release Notes

dtolnay/proc-macro2 (proc-macro2)

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 https://github.com/rust-lang/rust/issues/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)

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