build: bump syn from 1.0.73 to 1.0.74 in /fuzz

Bumps [syn](https://github.com/dtolnay/syn) from 1.0.73 to 1.0.74.
- [Release notes](https://github.com/dtolnay/syn/releases)
- [Commits](https://github.com/dtolnay/syn/compare/1.0.73...1.0.74)

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

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

fuzz/Cargo.lock

@@ -27,6 +27,9 @@ checksum = "595d3cfa7a60d4555cb5067b99f07142a08ea778de5cf993f7b75c7d8fabc486"
 [[package]]
 name = "api_client"
 version = "0.1.0"
+dependencies = [
+ "vmm-sys-util",
+]
 
 [[package]]
 name = "arbitrary"
@@ -59,6 +62,7 @@ dependencies = [
  "vm-fdt",
  "vm-memory",
  "vm-migration",
+ "vmm-sys-util",
 ]
 
 [[package]]
@@ -532,9 +536,9 @@ checksum = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
 
 [[package]]
 name = "syn"
-version = "1.0.73"
+version = "1.0.74"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f71489ff30030d2ae598524f61326b902466f72a0fb1a8564c001cc63425bcc7"
+checksum = "1873d832550d4588c3dbc20f01361ab00bfe741048f71e3fecf145a7cc18b29c"
 dependencies = [
  "proc-macro2",
  "quote",