Bump private-data-objects from 4f44384 to b89e3b6

Bumps [private-data-objects](https://github.com/hyperledger-labs/private-data-objects) from `4f44384` to `b89e3b6`.
- [Release notes](https://github.com/hyperledger-labs/private-data-objects/releases)
- [Commits](hyperledger-labs/private-data-objects@4f44384...b89e3b6)

---
updated-dependencies:
- dependency-name: private-data-objects
  dependency-type: direct:production
...

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