Bump serde from 1.0.208 to 1.0.210 in /frontend

[dependabot[bot]]

Bumps serde from 1.0.208 to 1.0.210.

Release notes

Sourced from serde's releases.

v1.0.210

• Support serializing and deserializing IpAddr and SocketAddr in no-std mode on Rust 1.77+ (#2816, thanks @​MathiasKoch)
• Make serde::ser::StdError and serde::de::StdError equivalent to core::error::Error on Rust 1.81+ (#2818)

v1.0.209

• Fix deserialization of empty structs and empty tuples inside of untagged enums (#2805, thanks @​Mingun)

Commits

• 89c4b02 Release 1.0.210
• eeb8e44 Merge pull request #2818 from dtolnay/coreerror
• 785c2d9 Stabilize no-std StdError trait
• d549f04 Reformat parse_ip_impl definition and calls
• 4c0dd63 Delete attr support from core::net deserialization macros
• 26fb134 Relocate cfg attrs out of parse_ip_impl and parse_socket_impl
• 07e614b Merge pull request #2817 from dtolnay/corenet
• b1f899f Delete doc(cfg) attribute from impls that are supported in no-std
• b4f860e Merge pull request #2816 from MathiasKoch/chore/core-net
• d940fe1 Reuse existing Buf wrapper as replacement for std::io::Write
• Additional commits viewable in compare view

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[dependabot[bot]]

Superseded by #107.