Update Rust crate proc-macro2 to v1.0.106

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
proc-macro2	build-dependencies	patch	1.0.101 → 1.0.106
proc-macro2	dependencies	patch	1.0.101 → 1.0.106

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Release Notes

dtolnay/proc-macro2 (proc-macro2)

v1.0.106

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• Optimize Span::byte_range (#​530)

v1.0.105

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• Make std dependencies more easily discoverable in source code (#​528)

v1.0.104

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• Add Rust 1.92.0's TokenStream Extend impls (#​527, rust-lang/rust#145722)

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)

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