build: bump serde_json from 1.0.65 to 1.0.66 in /fuzz

Bumps [serde_json](https://github.com/serde-rs/json) from 1.0.65 to 1.0.66.
- [Release notes](https://github.com/serde-rs/json/releases)
- [Commits](https://github.com/serde-rs/json/compare/v1.0.65...v1.0.66)

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

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

fuzz/Cargo.lock

@@ -494,9 +494,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.65"
+version = "1.0.66"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "28c5e91e4240b46c4c19219d6cc84784444326131a4210f496f948d5cc827a29"
+checksum = "336b10da19a12ad094b59d870ebde26a45402e5b470add4b5fd03c5048a32127"
 dependencies = [
  "itoa",
  "ryu",