chore(dep): bump the test-deps group across 1 directory with 2 updates (#659)

Bumps the test-deps group with 2 updates in the /fuzz directory: [libfuzzer-sys](https://github.com/rust-fuzz/libfuzzer) and [serde_json](https://github.com/serde-rs/json).


Updates `libfuzzer-sys` from 0.4.8 to 0.4.9
- [Changelog](https://github.com/rust-fuzz/libfuzzer/blob/main/CHANGELOG.md)
- [Commits](rust-fuzz/libfuzzer@0.4.8...0.4.9)

Updates `serde_json` from 1.0.134 to 1.0.138
- [Release notes](https://github.com/serde-rs/json/releases)
- [Commits](serde-rs/json@v1.0.134...v1.0.138)

---
updated-dependencies:
- dependency-name: libfuzzer-sys
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: test-deps
- dependency-name: serde_json
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: test-deps
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

fuzz/Cargo.lock

@@ -9,9 +9,9 @@ cargo-fuzz = true
 
 [dependencies]
 arbitrary = { version = "1.4.*", features = ["derive"] }
-libfuzzer-sys = { version = "0.4.8" }
+libfuzzer-sys = { version = "0.4.9" }
 serde = "1.0.217"
-serde_json = "1.0.134"
+serde_json = "1.0.138"
 
 [dependencies.rsonpath-lib]
 path = "../crates/rsonpath-lib"