Clean up the typing on ServiceInfo.properties to always return bytes.

The typing on properties was very confusing because it could have a mix
of bytes and str types, but only bytes would ever come back from the
backend and cache. The only way str could happen is if someone manually
passed it in. We now ensure all passed in data is converted to bytes

* Update ironic-lib from branch 'master'
  to 523407eebf22b68a3b1a3926666e8bb24fedf871
  - Merge "Compatibility with zeroconf 0.129.0"
  - Compatibility with zeroconf 0.129.0
    
    From Zeroconf CHANGELOG.md:
    v0.129.0 (2023-12-13)
    
    Feature
    
    * Add decoded_properties method to ServiceInfo
    python-zeroconf/python-zeroconf#1332
    python-zeroconf/python-zeroconf@9b595a1
    * Ensure ServiceInfo.properties always returns bytes
    python-zeroconf/python-zeroconf#1333
    python-zeroconf/python-zeroconf@d29553a
    
    Technically breaking change
    
    * `ServiceInfo.properties` always returns a dictionary with type
    `dict[bytes, bytes | None]` instead of a mix `str` and `bytes`. It was
    only possible to get a mixed dictionary if it was manually passed in
    when `ServiceInfo` was constructed.
    
    Co-Authored-By: Dmitry Tantsur <dtantsur@protonmail.com>
    Change-Id: I7f1a0c3329e5f29ec3e274558e3681142cc2ef78