Update Rust crate serde to v1.0.211

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
serde (source)	dependencies	patch	1.0.210 -> 1.0.211

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Release Notes

serde-rs/serde (serde)

### [`v1.0.211`](https://redirect.github.com/serde-rs/serde/compare/v1.0.210...v1.0.211) [Compare Source](https://redirect.github.com/serde-rs/serde/compare/v1.0.210...v1.0.211)

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Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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• [ ] If you want to rebase/retry this PR, check this box

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