build: Bump crc32c from 0.6.3 to 0.6.4 in /fuzz

Bumps [crc32c](https://github.com/zowens/crc32c) from 0.6.3 to 0.6.4.
- [Commits](https://github.com/zowens/crc32c/compare/v0.6.3...v0.6.4)

---
updated-dependencies:
- dependency-name: crc32c
  dependency-type: indirect
  update-type: version-update:semver-patch
...

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

fuzz/Cargo.lock

@@ -199,9 +199,9 @@ dependencies = [
 
 [[package]]
 name = "crc32c"
-version = "0.6.3"
+version = "0.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3dfea2db42e9927a3845fb268a10a72faed6d416065f77873f05e411457c363e"
+checksum = "d8f48d60e5b4d2c53d5c2b1d8a58c849a70ae5e5509b08a48d047e3b65714a74"
 dependencies = [
  "rustc_version",
 ]