Update Rust crate candid to 0.8.4

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
candid (source)	dependencies	patch	0.8.3 -> 0.8.4

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Release Notes

dfinity/candid

### [`v0.8.4`](https://togithub.com/dfinity/candid/blob/HEAD/Changelog.md#​2022-11-17-Rust-083----084) - Bug fix in TS bindings - Pretty print numbers

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Configuration

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