Update dependencies and enhance signing capabilities

- Updated `Cargo.lock` and `Cargo.toml` to reflect the new version `1.0.23` for the `alloy` package and added `serde_repr` as a dependency.
- Introduced `PrivateKeySigner` for local signing in the `SigningCredential` enum, allowing for random private key generation for testing.
- Enhanced the `AccountSigner` trait to support signing operations with the new `PrivateKey` variant.
- Added 7702 tests for session keys as well as owner execution

These changes improve the signing capabilities and facilitate testing with local private keys.

Author: d4mr

Cargo.lock

@@ -12,6 +12,6 @@ members = [
 resolver = "2"
 
 [workspace.dependencies]
-alloy = { version = "1.0.8" }
+alloy = { version = "1.0.23" }
 vault-types = { version = "0.1.0", git = "ssh://git@github.com/thirdweb-dev/vault.git", branch = "pb/update-alloy" }
 vault-sdk = { version = "0.1.0", git = "ssh://git@github.com/thirdweb-dev/vault.git", branch = "pb/update-alloy" }

Cargo.toml

@@ -1,4 +1,5 @@
 use alloy::primitives::ChainId;
+use alloy::signers::local::PrivateKeySigner;
 use alloy_signer_aws::AwsSigner;
 use aws_config::{BehaviorVersion, Region};
 use aws_credential_types::provider::future::ProvideCredentials as ProvideCredentialsFuture;
@@ -10,6 +11,13 @@ use vault_types::enclave::auth::Auth as VaultAuth;
 
 use crate::error::EngineError;
 
+impl SigningCredential {
+    /// Create a random private key credential for testing
+    pub fn random_local() -> Self {
+        SigningCredential::PrivateKey(PrivateKeySigner::random())
+    }
+}
+
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub enum SigningCredential {
     Vault(VaultAuth),
@@ -18,6 +26,10 @@ pub enum SigningCredential {
         thirdweb_auth: ThirdwebAuth,
     },
     AwsKms(AwsKmsCredential),
+    /// Private key signer for testing and development
+    /// Note: This should only be used in test environments
+    #[serde(skip)]
+    PrivateKey(PrivateKeySigner),
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize)]