chore(deps): bump serde_ipld_dagcbor from 0.5.0 to 0.6.0 in /rust

Bumps [serde_ipld_dagcbor](https://github.com/ipld/serde_ipld_dagcbor) from 0.5.0 to 0.6.0.
- [Commits](ipld/serde_ipld_dagcbor@v0.5.0...v0.6.0)

---
updated-dependencies:
- dependency-name: serde_ipld_dagcbor
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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