build: enforce hash feature to support no_std (#145)

Author: gabrielbosio

crates/starknet-types-core/Cargo.toml

@@ -18,7 +18,7 @@ num-integer = { version = "0.1", default-features = false }
 
 # Optional
 arbitrary = { version = "1.3", optional = true }
-blake2 = { version = "0.10.6", optional = true }
+blake2 = { version = "0.10.6", default-features = false, optional = true }
 digest = { version = "0.10.7", optional = true }
 serde = { version = "1", optional = true, default-features = false, features = [
   "alloc",
@@ -52,7 +52,10 @@ papyrus-serialization = ["std"]
 zeroize = ["dep:zeroize"]
 
 [dev-dependencies]
-proptest = { version = "1.5", default-features = false, features = ["alloc", "proptest-macro"] }
+proptest = { version = "1.5", default-features = false, features = [
+  "alloc",
+  "proptest-macro",
+] }
 regex = "1.11"
 serde_test = "1"
 criterion = "0.5"

ensure_no_std/Cargo.toml

@@ -10,6 +10,7 @@ starknet-types-core = { path = "../crates/starknet-types-core", default-features
     "curve",
     "parity-scale-codec",
     "num-traits",
+    "hash",
 ] }
 wee_alloc = "0.4.5"