Log Message:
py-dulwich: updated to 0.22.6

0.22.6  2024-11-16

* ``ObjectStore.iter_prefix``: fix handling of missing
  loose object directories.
* Reject invalid refcontainer values (not 40 characters or symref).
* Add type hints to various functions.

0.22.5  2024-11-07

* Drop support for Python 3.8.
* Fix refspec handling in porcelain.pull.
* Drop broken refspec support in porcelain.clone.
* Provide ``ref_prefix`` functionality client-side
  if the server does not support it.
* Consistently honor ``ref_prefix`` and ``protocol_version``
  arguments in client.
* Strip pkt-line when negotiating protocol v2. Fixes
  compatibility with gerrit.
* Don't pull in ``setuptools_rust`` when building pure
  package.
* Return peeled refs from ``GitClient.get_refs`` if protocol-v2
  is used.
* Drop outdated performance file.