Update Rust crate proc-macro2 to v1.0.87

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
proc-macro2	workspace.dependencies	patch	1.0.86 -> 1.0.87

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Release Notes

dtolnay/proc-macro2 (proc-macro2)

v1.0.87

Compare Source

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

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