chore: do not inherit serde from workspace

Author: JasterV

resources/secrets/Cargo.toml

@@ -14,4 +14,4 @@ async-trait = "0.1.56"
 serde_json = "1"
 shuttle-service = { path = "../../service", version = "0.40.0" }
 config = { version = "0.14.0", optional = true }
-serde = { workspace = true, optional = true }
+serde = { version = "1", optional = true }