chore(deps): bump serde-aux from 2.2.0 to 2.3.0 (#439)

Bumps [serde-aux](https://github.com/vityafx/serde-aux) from 2.2.0 to 2.3.0.
- [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-minor
...

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

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

Cargo.lock

@@ -2548,9 +2548,9 @@ dependencies = [
 
 [[package]]
 name = "serde-aux"
-version = "2.2.0"
+version = "2.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "77eb8c83f6ebaedf5e8f970a8a44506b180b8e6268de03885c8547031ccaee00"
+checksum = "907c320ef8f45ce134b28ca9567ec58ec0d51dcae4e1ffe7ee0cc15517243810"
 dependencies = [
  "serde",
  "serde_json",

ethers-middleware/Cargo.toml

@@ -27,7 +27,7 @@ tracing = { version = "0.1.27", default-features = false }
 tracing-futures = { version = "0.2.5", default-features = false }
 
 # for gas oracles
-serde-aux = { version = "2.2.0", default-features = false }
+serde-aux = { version = "2.3.0", default-features = false }
 reqwest = { version = "0.11.4", default-features = false, features = ["json", "rustls-tls"] }
 url = { version = "2.2.2", default-features = false }