Automatic update for pungi-4.3.0-1.fc36.

Changelog

* Wed Sep 15 2021 Lubomír Sedlář <lsedlar@redhat.com> - 4.3.0-1
- Only build CTS url when configured (lsedlar)
- Require requests_kerberos only when needed (lsedlar)
- Allow specifying $COMPOSE_ID in the `repo` value for osbs phase. (jkaluza)
- Make getting old compose config reusable (lsedlar)
- paths: Allow customizing log file extension (lsedlar)
- Add authentication for updating the compose URL in CTS. (ounsal)
- Fix type detection for osbuild images (lsedlar)
- Enable pungi to send compose_url patches to CTS (ounsal)
- Use xorriso instead of isoinfo when createiso_use_xorrisofs is enabled
  (ounsal)
- Fix tests for createrepo (drumian)
- Formatted files according to flake8 and black feedback (drumian)
- Handle the pungi failures to ensure creation of log files (ounsal)
- Add createrepo_enable_cache to configuration doc (hlin)
- Fix formatting (hlin)
- Install missing deps in ci image (hlin)
- Use pytest directly incl. support for posargs, e.g.: tox -- -s -vvv
  tests/path/to/a/single/test_something.py (fvalder)
- Supersede ModuleStream loading with ModuleIndex (fvalder)
- Better error message than 'KeyError' in pungi (drumian)
- Adding multithreading support for pungi/phases/image_checksum.py (jkunstle)
- doc: more additional_packages documentation (kdreyer)
- doc: fix typo in additional_packages description (kdreyer)
- doc: improve signed packages retry docs (kdreyer)
- Better error message than 'KeyError' in pungi (drumian)
- doc: explain buildContainer API (kdreyer)