build(deps): update alloy-signer requirement from 0.1 to 0.3 (#42)

Updates the requirements on [alloy-signer](https://github.com/alloy-rs/alloy) to permit the latest version.
- [Release notes](https://github.com/alloy-rs/alloy/releases)
- [Changelog](https://github.com/alloy-rs/alloy/blob/main/CHANGELOG.md)
- [Commits](alloy-rs/alloy@v0.1.1...v0.3.1)

---
updated-dependencies:
- dependency-name: alloy-signer
  dependency-type: direct:production
...

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Author: dependabot[bot]

Cargo.toml

@@ -46,7 +46,7 @@ tokio = { version = "1.39", features = ["macros", "rt-multi-thread"] }
 alloy-provider = "0.2"
 alloy-transport = "0.2"
 
-alloy-signer = { version = "0.1", default-features = false }
+alloy-signer = { version = "0.3", default-features = false }
 alloy-signer-local = { version = "0.2", default-features = false }
 
 alloy-rlp = { version = "0.3", default-features = false }