Bump serde from 1.0.80 to 1.0.81

Bumps [serde](https://github.com/serde-rs/serde) from 1.0.80 to 1.0.81.
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](https://github.com/serde-rs/serde/compare/v1.0.80...v1.0.81)

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

programs/native/lua_loader/Cargo.toml

@@ -11,7 +11,7 @@ bincode = "1.0.0"
 env_logger = "0.6.0"
 log = "0.4.2"
 rlua = "0.15.2"
-serde = "1.0.27"
+serde = "1.0.81"
 serde_derive = "1.0.81"
 solana-sdk = { path = "../../../sdk", version = "0.11.0" }