chore(deps): update rust crate serde_with to 3.8

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
serde_with	workspace.dependencies	minor	3.7 -> 3.8

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Release Notes

jonasbb/serde_with (serde_with)

v3.8.0: serde_with v3.8.0

Compare Source

Added

• Implement (De)Serialization for Pinned Smart Pointers by @​Astralchroma (#​733)
• Implement JsonSchemaAs for PickFirst by @​swlynch99 (#​721)

Changed

• Bump base64 dependency to v0.22 (#​724)
• Update dev dependencies

Fixed

• serde_conv regressed and triggered clippy::ptr_arg and add test to prevent future problems. (#​731)

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