Bump syn from 2.0.16 to 2.0.18 (#1104)

Bumps [syn](https://github.com/dtolnay/syn) from 2.0.16 to 2.0.18.
- [Release notes](https://github.com/dtolnay/syn/releases)
- [Commits](https://github.com/dtolnay/syn/compare/2.0.16...2.0.18)

---
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

@@ -144,7 +144,7 @@ checksum = "b9ccdd8f2a161be9bd5c023df56f1b2a0bd1d83872ae53b71a84a12c9bf6e842"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.16",
+ "syn 2.0.18",
 ]
 
 [[package]]
@@ -498,7 +498,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 2.0.16",
+ "syn 2.0.18",
 ]
 
 [[package]]
@@ -832,7 +832,7 @@ checksum = "89ca545a94061b6365f2c7355b4b32bd20df3ff95f02da9329b34ccc3bd6ee72"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.16",
+ "syn 2.0.18",
 ]
 
 [[package]]
@@ -1233,7 +1233,7 @@ dependencies = [
  "leon",
  "proc-macro2",
  "quote",
- "syn 2.0.16",
+ "syn 2.0.18",
 ]
 
 [[package]]
@@ -1369,7 +1369,7 @@ checksum = "4901771e1d44ddb37964565c654a3223ba41a594d02b8da471cc4464912b5cfa"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.16",
+ "syn 2.0.18",
 ]
 
 [[package]]
@@ -1509,7 +1509,7 @@ checksum = "a948666b637a0f465e8564c73e89d4dde00d72d4d473cc972f390fc3dcee7d9c"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.16",
+ "syn 2.0.18",
 ]
 
 [[package]]
@@ -1594,7 +1594,7 @@ checksum = "39407670928234ebc5e6e580247dd567ad73a3578460c5990f9503df207e8f07"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.16",
+ "syn 2.0.18",
 ]
 
 [[package]]
@@ -2033,7 +2033,7 @@ checksum = "8c805777e3930c8883389c602315a24224bcc738b63905ef87cd1420353ea93e"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.16",
+ "syn 2.0.18",
 ]
 
 [[package]]
@@ -2208,9 +2208,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.16"
+version = "2.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a6f671d4b5ffdb8eadec19c0ae67fe2639df8684bd7bc4b83d986b8db549cf01"
+checksum = "32d41677bcbe24c20c52e7c70b0d8db04134c5d1066bf98662e2871ad200ea3e"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -2268,7 +2268,7 @@ checksum = "f9456a42c5b0d803c8cd86e73dd7cc9edd429499f37a3550d286d5e86720569f"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.16",
+ "syn 2.0.18",
 ]
 
 [[package]]
@@ -2323,7 +2323,7 @@ checksum = "630bdcf245f78637c13ec01ffae6187cca34625e8c63150d424b59e55af2675e"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.16",
+ "syn 2.0.18",
 ]
 
 [[package]]
@@ -2482,7 +2482,7 @@ checksum = "0f57e3ca2a01450b1a921183a9c9cbfda207fd822cef4ccb00a65402cbba7a74"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.16",
+ "syn 2.0.18",
 ]
 
 [[package]]
@@ -2746,7 +2746,7 @@ dependencies = [
  "once_cell",
  "proc-macro2",
  "quote",
- "syn 2.0.16",
+ "syn 2.0.18",
  "wasm-bindgen-shared",
 ]
 
@@ -2780,7 +2780,7 @@ checksum = "e128beba882dd1eb6200e1dc92ae6c5dbaa4311aa7bb211ca035779e5efc39f8"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.16",
+ "syn 2.0.18",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]

crates/leon-macros/Cargo.toml

@@ -15,5 +15,5 @@ proc-macro = true
 [dependencies]
 leon = { version = "2.0.0", path = "../leon", default-features = false }
 proc-macro2 = "1.0.59"
-syn = { version = "2.0.16", default-features = false, features = ["proc-macro", "parsing"] }
+syn = { version = "2.0.18", default-features = false, features = ["proc-macro", "parsing"] }
 quote = "1.0.28"