Log Message:
py-borgbackup: updated to 1.2.7

Version 1.2.7 (2023-12-02)
--------------------------

For upgrade and compatibility hints, please also read the section "Upgrade \ 
Notes"
above.

Fixes:

- docs: CVE-2023-36811 upgrade steps: consider checkpoint archives,
- check/compact: fix spurious reappearance of orphan chunks since borg 1.2,
  this consists of 2 fixes:

  - for existing chunks: check --repair: recreate shadow index,
  - for newly created chunks: update shadow index when doing a double-put,
- LockRoster.modify: no KeyError if element was already gone,
- create --X-from-command: run subcommands with a clean environment,
- list --sort-by: support "archive" as alias of "name",
- fix rc and msg if arg parsing throws an exception,

Other changes:

- support and test on Python 3.12
- include unistd.h in _chunker.c (fix for Python 3.13)
- allow msgpack 1.0.6 and 1.0.7
- TAM issues: show tracebacks, improve borg check logging,
- replace "datetime.utcfromtimestamp" with custom helper to avoid
  deprecation warnings when using Python 3.12
- vagrant:

  - use generic/debian9 box, fixes
  - add VM with debian bookworm / test on OpenSSL 3.0.x.
- docs:

  - not only attack/unsafe, can also be a fs issue,
  - point to CVE-2023-36811 upgrade steps from borg 1.1 to 1.2 upgrade steps,
  - upgrade steps needed for all kinds of repos (including "none" \ 
encryption mode),
  - upgrade steps: talk about consequences of borg check,
  - upgrade steps: remove period that could be interpreted as part of the command
  - automated-local.rst: use GPT UUID for consistent udev rule
  - create disk/partition sector backup by disk serial number,
  - update macOS hint about full disk access
  - clarify borg prune -a option description,
  - readthedocs: also build offline docs (HTMLzip),
  - frontends: add "check.rebuild_refcounts" message