chore(deps): update rust crate serde to v1.0.221

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
serde (source)	workspace.dependencies	patch	1.0.220 -> 1.0.221

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Release Notes

serde-rs/serde (serde)

v1.0.221

Compare Source

• Documentation improvements (#​2973)
• Deprecate serde_if_integer128! macro (#​2975)

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.01%. Comparing base (345d11d) to head (47b8ff7).
⚠️ Report is 1 commits behind head on develop.

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