chore(deps): bump serde-aux from 3.1.0 to 4.0.0 (#1673)

Bumps [serde-aux](https://github.com/vityafx/serde-aux) from 3.1.0 to 4.0.0.
- [Release notes](https://github.com/vityafx/serde-aux/releases)
- [Commits](https://github.com/vityafx/serde-aux/commits)

---
updated-dependencies:
- dependency-name: serde-aux
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Cargo.lock

@@ -3443,9 +3443,9 @@ dependencies = [
 
 [[package]]
 name = "serde-aux"
-version = "3.1.0"
+version = "4.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d0a77223b653fa95f3f9864f3eb25b93e4ed170687eb42d85b6b98af21d5e1de"
+checksum = "c79c1a5a310c28bf9f7a4b9bd848553051120d80a5952f993c7eb62f6ed6e4c5"
 dependencies = [
  "serde",
  "serde_json",

ethers-etherscan/Cargo.toml

@@ -18,7 +18,7 @@ ethers-core = { version = "^0.17.0", path = "../ethers-core", default-features =
 reqwest = { version = "0.11.11", default-features = false, features = ["json"] }
 serde = { version = "1.0.124", default-features = false, features = ["derive"] }
 serde_json = { version = "1.0.64", default-features = false }
-serde-aux = { version = "3.1.0", default-features = false }
+serde-aux = { version = "4.0.0", default-features = false }
 thiserror = "1.0"
 tracing = "0.1.36"
 semver = "1.0.13"