chore(deps): update sp-core requirement from 31.0.0 to 34.0.0

---
updated-dependencies:
- dependency-name: sp-core
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Cargo.toml

@@ -14,7 +14,7 @@ tokio = { version = "1.40", default-features = false, features = ["full"] }
 hex = { version = "0.4.3", default-features = false }
 k256 = { version = "0.13.3", default-features = false }
 bincode = "1.3.3"
-sp-core = { version = "31.0.0", default-features = false }
+sp-core = { version = "34.0.0", default-features = false }
 rand_chacha = "0.3.1"
 serde = { version = "1.0.214", features = ["derive"] }
 round-based = { version = "0.3.2", features = ["runtime-tokio"] }