build: Bump libfuzzer-sys from 0.4.6 to 0.4.7 in /fuzz

Bumps [libfuzzer-sys](https://github.com/rust-fuzz/libfuzzer) from 0.4.6 to 0.4.7.
- [Changelog](https://github.com/rust-fuzz/libfuzzer/blob/main/CHANGELOG.md)
- [Commits](https://github.com/rust-fuzz/libfuzzer/compare/0.4.6...0.4.7)

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

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

fuzz/Cargo.lock

@@ -445,9 +445,9 @@ checksum = "b4668fb0ea861c1df094127ac5f1da3409a82116a4ba74fca2e58ef927159bb3"
 
 [[package]]
 name = "libfuzzer-sys"
-version = "0.4.6"
+version = "0.4.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "beb09950ae85a0a94b27676cccf37da5ff13f27076aa1adbc6545dd0d0e1bd4e"
+checksum = "a96cfd5557eb82f2b83fed4955246c988d331975a002961b07c81584d107e7f7"
 dependencies = [
  "arbitrary",
  "cc",