chore(deps): bump proc-macro2 from 1.0.29 to 1.0.30 (#504)

Bumps [proc-macro2](https://github.com/alexcrichton/proc-macro2) from 1.0.29 to 1.0.30.
- [Release notes](https://github.com/alexcrichton/proc-macro2/releases)
- [Commits](https://github.com/alexcrichton/proc-macro2/compare/1.0.29...1.0.30)

---
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

@@ -2040,9 +2040,9 @@ checksum = "bc881b2c22681370c6a780e47af9840ef841837bc98118431d4e1868bd0c1086"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.29"
+version = "1.0.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b9f5105d4fdaab20335ca9565e106a5d9b82b6219b5ba735731124ac6711d23d"
+checksum = "edc3358ebc67bc8b7fa0c007f945b0b18226f78437d61bec735a9eb96b61ee70"
 dependencies = [
  "unicode-xid",
 ]

ethers-core/Cargo.toml

@@ -37,7 +37,7 @@ once_cell = "1.8.0"
 convert_case = { version = "0.4.0", optional = true }
 syn = { version = "1.0.80", optional = true }
 quote = { version = "1.0.9", optional = true }
-proc-macro2 = { version = "1.0.29", optional = true }
+proc-macro2 = { version = "1.0.30", optional = true }
 
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
 # async