chore(deps): Update Rust crate downcast-rs to 1.2.1

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
downcast-rs	dependencies	patch	1.2.0 -> 1.2.1

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Release Notes

marcianx/downcast-rs (downcast-rs)

### [`v1.2.1`](https://togithub.com/marcianx/downcast-rs/blob/HEAD/CHANGELOG.md#121---2024-04-06) [Compare Source](https://togithub.com/marcianx/downcast-rs/compare/v1.2.0...v1.2.1) ##### Change - Consolidated bounds on the trait to avoid triggering Clippy's `multiple_bound_locations` lint.

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Configuration

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[coveralls]

Pull Request Test Coverage Report for Build 8904389334

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 29.185%

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Totals
Change from base Build 8851603857:	0.0%
Covered Lines:	1658
Relevant Lines:	5681

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💛 - Coveralls