Remove unused dependencies

Author: allanbrondum

contract-testing/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "concordium-smart-contract-testing"
 version = "4.4.0"
-edition = "2021"
+edition = "2024"
 rust-version = "1.85"
 license = "MPL-2.0"
 readme = "README.md"
@@ -15,19 +15,10 @@ exclude = ["tests"]
 [dependencies]
 concordium-rust-sdk = { version = "9.0.0", path = "../concordium-rust-sdk" }
 tokio = { version = "1.28", features = ["rt-multi-thread", "time"] }
-sha2 = "0.10"
 anyhow = "1"
-# Pinned to version `1.6.0`, since otherwise rust version `1.73` would refuse to build.
-base64ct = "=1.6.0"
-thiserror = "1.0"
-num-bigint = "0.4"
+thiserror = "2.0.0"
+num-bigint = "0.5.1"
 num-integer = "0.1"
 
-# Pin versions to be compatible with 1.73. Remove pins when MSRV is pumped
-rayon = ">=1.0, <1.11"
-rayon-core = ">=1.0, <1.13"
-serde_with = ">=3.0, <3.13"
-ed25519-dalek = ">=2.0, <2.2.0"
-
 [dev-dependencies]
 rand = "0.8"