Bump syn from 2.0.3 to 2.0.8 (#381)

Bumps [syn](https://github.com/dtolnay/syn) from 2.0.3 to 2.0.8.
- [Release notes](https://github.com/dtolnay/syn/releases)
- [Commits](https://github.com/dtolnay/syn/compare/2.0.3...2.0.8)

---
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

@@ -1246,7 +1246,7 @@ dependencies = [
  "serde",
  "serde_json",
  "serde_yaml",
- "syn 2.0.7",
+ "syn 2.0.8",
  "thiserror",
  "typify",
  "unicode-ident",
@@ -1265,7 +1265,7 @@ dependencies = [
  "serde_json",
  "serde_tokenstream 0.2.0",
  "serde_yaml",
- "syn 2.0.7",
+ "syn 2.0.8",
 ]
 
 [[package]]
@@ -1610,7 +1610,7 @@ checksum = "e801c1712f48475582b7696ac71e0ca34ebb30e09338425384269d9717c62cad"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.7",
+ "syn 2.0.8",
 ]
 
 [[package]]
@@ -1655,7 +1655,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "serde",
- "syn 2.0.7",
+ "syn 2.0.8",
 ]
 
 [[package]]
@@ -1811,9 +1811,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.7"
+version = "2.0.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9a9a90d19f27bb60792270bb90225f96d97fc5705395134b2ca1dcbb3acc27f4"
+checksum = "bcc02725fd69ab9f26eab07fad303e2497fad6fb9eba4f96c4d1687bdf704ad9"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1877,7 +1877,7 @@ checksum = "f9456a42c5b0d803c8cd86e73dd7cc9edd429499f37a3550d286d5e86720569f"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.7",
+ "syn 2.0.8",
 ]
 
 [[package]]