fix: Add std feature to serde to fix linting issues

With a recent breaking update in serde (PR open-telemetry#2976), the `Deserialize`
derive attribute now requires `std` support in order to compile due to
some internal logic inside of serde now being moved behind a feature
gate.

Author: lucamuscat

Cargo.toml

@@ -37,7 +37,7 @@ prost-build = "0.14"
 prost-types = "0.14"
 rand = { version = "0.9", default-features = false }
 reqwest = { version = "0.12", default-features = false }
-serde = { version = "1.0", default-features = false }
+serde = { version = "1.0", default-features = false, features = ["std"]}
 serde_json = "1.0"
 temp-env = "0.3.6"
 thiserror = { version = "2", default-features = false }