build(deps): bump serde_with from 3.15.1 to 3.16.1

Bumps [serde_with](https://github.com/jonasbb/serde_with) from 3.15.1 to 3.16.1.
- [Release notes](https://github.com/jonasbb/serde_with/releases)
- [Commits](jonasbb/serde_with@v3.15.1...v3.16.1)

---
updated-dependencies:
- dependency-name: serde_with
  dependency-version: 3.16.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Cargo.lock

@@ -15,7 +15,7 @@ borsh = { version = "1.6", features = ["derive"] }
 num-derive = "0.4"
 num-traits = "0.2"
 serde = { version = "1.0", features = ["derive"], optional = true }
-serde_with = { version = "3.15", optional = true }
+serde_with = { version = "3.16", optional = true }
 solana-account-info = "^3.0"
 solana-cpi = "3.0"
 solana-instruction = "3.0"