build(deps): bump serde from 1.0.218 to 1.0.219 (solana-program#8)

Bumps [serde](https://github.com/serde-rs/serde) from 1.0.218 to 1.0.219.
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](serde-rs/serde@v1.0.218...v1.0.219)

---
updated-dependencies:
- dependency-name: serde
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Cargo.lock

@@ -16,7 +16,7 @@ serde-traits = ["dep:serde", "spl-pod/serde-traits"]
 borsh = "1.5.3"
 num-derive = "0.4"
 num-traits = "0.2"
-serde = { version = "1.0.216", optional = true }
+serde = { version = "1.0.219", optional = true }
 solana-borsh = "2.2.1"
 solana-decode-error = "2.2.1"
 solana-instruction = "2.2.1"