Remove dependency on identity_core default features

`identity_did` and `identity_document` depend on `identity_core` but do
not turn off default features. This means that these crates cannot be
compiled for `wasm32-unknown-unknown` without a dependency on `js-sys`.

Given the default features are not required, removing them makes these
crates compatible across a wider range of compilation targets.

identity_did/Cargo.toml

@@ -13,7 +13,7 @@ description = "Agnostic implementation of the Decentralized Identifiers (DID) st
 [dependencies]
 did_url_parser = { version = "0.2.0", features = ["std", "serde"] }
 form_urlencoded = { version = "1.2.0", default-features = false, features = ["alloc"] }
-identity_core = { version = "=1.3.1", path = "../identity_core" }
+identity_core = { version = "=1.3.1", path = "../identity_core", default-features = false }
 serde.workspace = true
 strum.workspace = true
 thiserror.workspace = true

identity_document/Cargo.toml

@@ -13,7 +13,7 @@ description = "Method-agnostic implementation of the Decentralized Identifiers (
 
 [dependencies]
 did_url_parser = { version = "0.2.0", features = ["std", "serde"] }
-identity_core = { version = "=1.3.1", path = "../identity_core" }
+identity_core = { version = "=1.3.1", path = "../identity_core", default-features = false }
 identity_did = { version = "=1.3.1", path = "../identity_did" }
 identity_verification = { version = "=1.3.1", path = "../identity_verification", default-features = false }
 indexmap = { version = "2.0", default-features = false, features = ["std", "serde"] }