chore(deps): update rust crate rust_decimal to 1.31.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
rust_decimal	dev-dependencies	minor	1.30.0 -> 1.31.0

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Release Notes

paupino/rust-decimal (rust_decimal)

### [`v1.31.0`](https://togithub.com/paupino/rust-decimal/blob/HEAD/CHANGELOG.md#1310) [Compare Source](https://togithub.com/paupino/rust-decimal/compare/1.30.0...1.31.0) ##### Fixed - Fixes an issue with `trunc_with_scale` implicitly rounding in some scenarios ([#​600](https://togithub.com/paupino/rust-decimal/pull/600)) ##### Changed - Various dependency features were updated. ##### Credit Thank you to [@​mkatychev](https://togithub.com/mkatychev) for your contribution this release.

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