Adding requirement of cargo-platform < 0.1.6 to keep 1.56.0 msrv

Cargo.toml

@@ -11,7 +11,7 @@ rust-version = "1.56.0"
 
 [dependencies]
 camino = { version = "1.0.7", features = ["serde1"] }
-cargo-platform = "0.1.2"
+cargo-platform = "0.1.2, < 0.1.6"
 derive_builder = { version = "0.12", optional = true }
 semver = { version = "1.0.7", features = ["serde"] }
 serde = { version = "1.0.136", features = ["derive"] }