- Comment the LogRateLimitIntervalSec option in the systemd service
when building for SLE/Leap since systemd < 240 doesn't support it.

- Remove unneeded build dependency python-black and python-devel
- Reduce the required python-colorama version since a newer
version is not really needed.

- Add patch to remove invalid test:
* remove-invalid-test.patch

- Use `python3 -m venv` instead of invoking pyvenv which doesn't seem
to exist anymore with python 3.8.

- Fix execution path in borgmatic.service

- Update to 1.5.1
* #289: Tired of looking up the latest successful archive name in
order to pass it to borgmatic actions? Me too. Now you can
specify "--archive latest" to all actions that accept an archive
flag.
* 290: Fix the "--stats" and "--files" flags so that they yield
output at verbosity 0.
* Reduce the default verbosity of borgmatic logs sent to
Healthchecks monitoring hook. Now, it's warnings and errors
only. You can increase the verbosity via the
"--monitoring-verbosity" flag.
* Add security policy documentation in SECURITY.md.

- Update to 1.5.0
* #245: Monitor backups with PagerDuty hook integration. See the