build: Bump anstream from 0.6.5 to 0.6.8 in /fuzz

Bumps [anstream](https://github.com/rust-cli/anstyle) from 0.6.5 to 0.6.8.
- [Commits](https://github.com/rust-cli/anstyle/compare/anstream-v0.6.5...anstream-v0.6.8)

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

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

fuzz/Cargo.lock

@@ -12,9 +12,9 @@ dependencies = [
 
 [[package]]
 name = "anstream"
-version = "0.6.5"
+version = "0.6.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d664a92ecae85fd0a7392615844904654d1d5f5514837f471ddef4a057aba1b6"
+checksum = "628a8f9bd1e24b4e0db2b4bc2d000b001e7dd032d54afa60a68836aeec5aa54a"
 dependencies = [
  "anstyle",
  "anstyle-parse",