Update Rust crate async-trait to 0.1.73

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
async-trait	dependencies	patch	0.1.68 -> 0.1.73

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Release Notes

dtolnay/async-trait (async-trait)

### [`v0.1.73`](https://togithub.com/dtolnay/async-trait/releases/tag/0.1.73) [Compare Source](https://togithub.com/dtolnay/async-trait/compare/0.1.72...0.1.73) - Prevent generated code from triggering ignored_unit_patterns pedantic clippy lint ### [`v0.1.72`](https://togithub.com/dtolnay/async-trait/releases/tag/0.1.72) [Compare Source](https://togithub.com/dtolnay/async-trait/compare/0.1.71...0.1.72) - Documentation improvements ### [`v0.1.71`](https://togithub.com/dtolnay/async-trait/releases/tag/0.1.71) [Compare Source](https://togithub.com/dtolnay/async-trait/compare/0.1.70...0.1.71) - Documentation improvements ### [`v0.1.70`](https://togithub.com/dtolnay/async-trait/compare/0.1.69...0.1.70) [Compare Source](https://togithub.com/dtolnay/async-trait/compare/0.1.69...0.1.70) ### [`v0.1.69`](https://togithub.com/dtolnay/async-trait/releases/tag/0.1.69) [Compare Source](https://togithub.com/dtolnay/async-trait/compare/0.1.68...0.1.69) - Resolve new diverging_sub_expression clippy lint in generated code

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