chore(rust)(deps): update serde_ipld_dagcbor requirement in /wnfs

Updates the requirements on [serde_ipld_dagcbor](https://github.com/ipld/serde_ipld_dagcbor) to permit the latest version.
- [Commits](ipld/serde_ipld_dagcbor@v0.4.0...v0.6.0)

---
updated-dependencies:
- dependency-name: serde_ipld_dagcbor
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

wnfs/Cargo.toml

@@ -39,7 +39,7 @@ semver = { version = "1.0", features = ["serde"] }
 serde = { version = "1.0", features = ["rc"] }
 serde-byte-array = "0.1"
 serde_bytes = "0.11"
-serde_ipld_dagcbor = "0.4"
+serde_ipld_dagcbor = "0.6"
 sha3 = "0.10"
 skip_ratchet = { version = "0.3", features = ["serde"] }
 thiserror = "1.0"