build: bump serde_json from 1.0.64 to 1.0.65 in /fuzz

Bumps [serde_json](https://github.com/serde-rs/json) from 1.0.64 to 1.0.65.
- [Release notes](https://github.com/serde-rs/json/releases)
- [Commits](https://github.com/serde-rs/json/compare/v1.0.64...v1.0.65)

---
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 = "1.0.64"
+version = "1.0.65"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "799e97dc9fdae36a5c8b8f2cae9ce2ee9fdce2058c57a93e6099d919fd982f79"
+checksum = "28c5e91e4240b46c4c19219d6cc84784444326131a4210f496f948d5cc827a29"
 dependencies = [
  "itoa",
  "ryu",