build: Bump ryu from 1.0.12 to 1.0.13 in /fuzz

Bumps [ryu](https://github.com/dtolnay/ryu) from 1.0.12 to 1.0.13.
- [Release notes](https://github.com/dtolnay/ryu/releases)
- [Commits](https://github.com/dtolnay/ryu/compare/1.0.12...1.0.13)

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

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

fuzz/Cargo.lock

@@ -556,9 +556,9 @@ dependencies = [
 
 [[package]]
 name = "ryu"
-version = "1.0.12"
+version = "1.0.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7b4b9743ed687d4b4bcedf9ff5eaa7398495ae14e61cba0a295704edbc7decde"
+checksum = "f91339c0467de62360649f8d3e185ca8de4224ff281f66000de5eb2a77a79041"
 
 [[package]]
 name = "seccompiler"