Bump syn from 2.0.18 to 2.0.20 (#514)

Bumps [syn](https://github.com/dtolnay/syn) from 2.0.18 to 2.0.20.
- [Release notes](https://github.com/dtolnay/syn/releases)
- [Commits](https://github.com/dtolnay/syn/compare/2.0.18...2.0.20)

---
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

@@ -111,7 +111,7 @@ checksum = "16e62a023e7c117e27523144c5d2459f4397fcc3cab0085af8e2224f643a0193"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.18",
+ "syn 2.0.20",
 ]
 
 [[package]]
@@ -122,7 +122,7 @@ checksum = "b9ccdd8f2a161be9bd5c023df56f1b2a0bd1d83872ae53b71a84a12c9bf6e842"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.18",
+ "syn 2.0.20",
 ]
 
 [[package]]
@@ -293,7 +293,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 2.0.18",
+ "syn 2.0.20",
 ]
 
 [[package]]
@@ -476,7 +476,7 @@ dependencies = [
  "quote",
  "serde",
  "serde_tokenstream",
- "syn 2.0.18",
+ "syn 2.0.20",
 ]
 
 [[package]]
@@ -534,7 +534,7 @@ dependencies = [
  "reqwest",
  "serde",
  "serde_json",
- "syn 2.0.18",
+ "syn 2.0.20",
  "uuid",
 ]
 
@@ -562,7 +562,7 @@ dependencies = [
  "reqwest",
  "serde",
  "serde_json",
- "syn 2.0.18",
+ "syn 2.0.20",
  "uuid",
  "wasm-bindgen-test",
 ]
@@ -673,7 +673,7 @@ checksum = "89ca545a94061b6365f2c7355b4b32bd20df3ff95f02da9329b34ccc3bd6ee72"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.18",
+ "syn 2.0.20",
 ]
 
 [[package]]
@@ -1281,7 +1281,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9825a04601d60621feed79c4e6b56d65db77cdca55cef43b46b0de1096d1c282"
 dependencies = [
  "proc-macro2",
- "syn 2.0.18",
+ "syn 2.0.20",
 ]
 
 [[package]]
@@ -1346,7 +1346,7 @@ dependencies = [
  "serde",
  "serde_json",
  "serde_yaml",
- "syn 2.0.18",
+ "syn 2.0.20",
  "thiserror",
  "typify",
  "unicode-ident",
@@ -1365,7 +1365,7 @@ dependencies = [
  "serde_json",
  "serde_tokenstream",
  "serde_yaml",
- "syn 2.0.18",
+ "syn 2.0.20",
 ]
 
 [[package]]
@@ -1726,7 +1726,7 @@ checksum = "d9735b638ccc51c28bf6914d90a2e9725b377144fc612c49a611fddd1b631d68"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.18",
+ "syn 2.0.20",
 ]
 
 [[package]]
@@ -1778,7 +1778,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "serde",
- "syn 2.0.18",
+ "syn 2.0.20",
 ]
 
 [[package]]
@@ -1934,9 +1934,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.18"
+version = "2.0.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "32d41677bcbe24c20c52e7c70b0d8db04134c5d1066bf98662e2871ad200ea3e"
+checksum = "fcb8d4cebc40aa517dfb69618fa647a346562e67228e2236ae0042ee6ac14775"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1991,7 +1991,7 @@ checksum = "f9456a42c5b0d803c8cd86e73dd7cc9edd429499f37a3550d286d5e86720569f"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.18",
+ "syn 2.0.20",
 ]
 
 [[package]]
@@ -2073,7 +2073,7 @@ checksum = "630bdcf245f78637c13ec01ffae6187cca34625e8c63150d424b59e55af2675e"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.18",
+ "syn 2.0.20",
 ]
 
 [[package]]
@@ -2225,7 +2225,7 @@ dependencies = [
  "regress",
  "schemars",
  "serde_json",
- "syn 2.0.18",
+ "syn 2.0.20",
  "thiserror",
  "unicode-ident",
 ]
@@ -2241,7 +2241,7 @@ dependencies = [
  "serde",
  "serde_json",
  "serde_tokenstream",
- "syn 2.0.18",
+ "syn 2.0.20",
  "typify-impl",
 ]
 
@@ -2400,7 +2400,7 @@ dependencies = [
  "once_cell",
  "proc-macro2",
  "quote",
- "syn 2.0.18",
+ "syn 2.0.20",
  "wasm-bindgen-shared",
 ]
 
@@ -2434,7 +2434,7 @@ checksum = "54681b18a46765f095758388f2d0cf16eb8d4169b639ab575a8f5693af210c7b"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.18",
+ "syn 2.0.20",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]