build(deps): bump syn from 1.0.102 to 1.0.103

Bumps [syn](https://github.com/dtolnay/syn) from 1.0.102 to 1.0.103.
- [Release notes](https://github.com/dtolnay/syn/releases)
- [Commits](https://github.com/dtolnay/syn/compare/1.0.102...1.0.103)

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

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

Cargo.lock

@@ -3921,9 +3921,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "1.0.102"
+version = "1.0.103"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3fcd952facd492f9be3ef0d0b7032a6e442ee9b361d4acc2b1d0c4aaa5f613a1"
+checksum = "a864042229133ada95abf3b54fdc62ef5ccabe9515b64717bcb9a1919e59445d"
 dependencies = [
  "proc-macro2",
  "quote",

core/macros/Cargo.toml

@@ -9,4 +9,4 @@ proc-macro = true
 
 [dependencies]
 quote = "1.0.21"
-syn = { version = "1.0.102", features = ["full"] }
+syn = { version = "1.0.103", features = ["full"] }