Update Rust crate dyn-clone to v1.0.20

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
dyn-clone	workspace.dependencies	patch	1.0.16 → 1.0.20

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Release Notes

dtolnay/dyn-clone (dyn-clone)

v1.0.20

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• Support targets without alloc::sync::Arc (#​32, thanks @​af-afk)

v1.0.19

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• Documentation improvements

v1.0.18

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• Documentation improvements

v1.0.17

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• Work around non_local_definitions warning being triggered in macro-generated impl in clone_trait_object! with rustc 1.78-nightly (#​28)

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