chore(deps): bump syn from 1.0.86 to 1.0.88 (#1033)

Bumps [syn](https://github.com/dtolnay/syn) from 1.0.86 to 1.0.88.
- [Release notes](https://github.com/dtolnay/syn/releases)
- [Commits](https://github.com/dtolnay/syn/compare/1.0.86...1.0.88)

---
updated-dependencies:
- dependency-name: syn
  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

@@ -3603,9 +3603,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "1.0.86"
+version = "1.0.88"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a65b3f4ffa0092e9887669db0eae07941f023991ab58ea44da8fe8e2d511c6b"
+checksum = "ebd69e719f31e88618baa1eaa6ee2de5c9a1c004f1e9ecdb58e8352a13f20a01"
 dependencies = [
  "proc-macro2",
  "quote",

ethers-core/Cargo.toml

@@ -36,7 +36,7 @@ cargo_metadata = { version = "0.14.2", optional = true }
 
 # eip712 feature enabled dependencies
 convert_case = { version = "0.5.0", optional = true }
-syn = { version = "1.0.86", optional = true }
+syn = { version = "1.0.88", optional = true }
 quote = { version = "1.0.15", optional = true }
 proc-macro2 = { version = "1.0.36", optional = true }