chore(deps): bump proc-macro2 from 1.0.50 to 1.0.51 (#2117)

Bumps [proc-macro2](https://github.com/dtolnay/proc-macro2) from 1.0.50 to 1.0.51.
- [Release notes](https://github.com/dtolnay/proc-macro2/releases)
- [Commits](https://github.com/dtolnay/proc-macro2/compare/1.0.50...1.0.51)

---
updated-dependencies:
- dependency-name: proc-macro2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Cargo.lock

@@ -3192,9 +3192,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.50"
+version = "1.0.51"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6ef7d57beacfaf2d8aee5937dab7b7f28de3cb8b1828479bb5de2a7106f2bae2"
+checksum = "5d727cae5b39d21da60fa540906919ad737832fe0b1c165da3a34d6548c849d6"
 dependencies = [
  "unicode-ident",
 ]

ethers-core/Cargo.toml

@@ -41,7 +41,7 @@ cargo_metadata = { version = "0.15.3", optional = true }
 # eip712 feature enabled dependencies
 convert_case = { version = "0.6.0", optional = true }
 syn = { version = "1.0.107", optional = true }
-proc-macro2 = { version = "1.0.50", optional = true }
+proc-macro2 = { version = "1.0.51", optional = true }
 num_enum = "0.5.9"
 
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]