Bump serde from 1.0.102 to 1.0.103 (#7163)

Bumps [serde](https://github.com/serde-rs/serde) from 1.0.102 to 1.0.103.
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](https://github.com/serde-rs/serde/compare/v1.0.102...v1.0.103)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

ledger/Cargo.toml

@@ -27,7 +27,7 @@ rand = "0.6.5"
 rand_chacha = "0.1.1"
 rayon = "1.2.0"
 reed-solomon-erasure = { package = "solana-reed-solomon-erasure", version = "4.0.1-3", features = ["simd-accel"] }
-serde = "1.0.102"
+serde = "1.0.103"
 serde_derive = "1.0.103"
 solana-client = { path = "../client", version = "0.22.0" }
 solana-genesis-programs = { path = "../genesis-programs", version = "0.22.0" }